WO2022152089A1

WO2022152089A1 - Information transmission method and device thereof

Info

Publication number: WO2022152089A1
Application number: PCT/CN2022/071115
Authority: WO
Inventors: 刘子乔; 谌丽; 孙建成
Original assignee: 大唐移动通信设备有限公司
Priority date: 2021-01-15
Filing date: 2022-01-10
Publication date: 2022-07-21
Also published as: EP4280685A4; CN114765819A; US20240073768A1; EP4280685A1; CN114765819B

Abstract

The present application relates to the technical field of wireless communications and provides an information transmission method and a device thereof. In the present application, a source IAB donor centralized unit (CU) of an IAB node receives first candidate cell identifiers from the IAB node or first candidate cell identifiers from a target IAB donor CU of the IAB node, the first candidate cell identifiers being allocated for the IAB node migrating to the target IAB donor CU, and the first candidate cell identifiers comprising candidate cell identifiers of a child node of the IAB node and/or a terminal connected to the IAB node; and the source IAB donor CU sends a second candidate cell identifier to the child node of the IAB node and/or the terminal connected to the IAB node, the second candidate cell identifier comprising at least one of the first candidate cell identifiers.

Description

一种信息传输方法及其装置An information transmission method and device thereof

相关申请的交叉引用CROSS-REFERENCE TO RELATED APPLICATIONS

本申请要求在2021年01月15日提交中国专利局、申请号为202110054967.8、申请名称为“一种信息传输方法及其装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of the Chinese patent application with the application number 202110054967.8 and the application title "An information transmission method and device thereof" filed with the China Patent Office on January 15, 2021, the entire contents of which are incorporated into this application by reference middle.

技术领域technical field

本申请涉及无线通信技术领域，尤其涉及一种信息传输方法及其装置。The present application relates to the field of wireless communication technologies, and in particular, to an information transmission method and device thereof.

背景技术Background technique

第五代移动通信***(5th-Generation，5G)中引入了接入回传一体化(Integrated Access and Backhaul，IAB)网络技术，IAB网络中的接入链路(Access Link，AL)和回传链路(Backhaul Link，BL)采用无线传输方案，以降低部署成本，提高部署灵活性。The fifth-generation mobile communication system (5th-Generation, 5G) introduced the integrated access and backhaul (IAB) network technology, the access link (AL) and backhaul in the IAB network The link (Backhaul Link, BL) adopts a wireless transmission scheme to reduce deployment costs and improve deployment flexibility.

在IAB网络中IAB宿主(IAB donor)通过有线链路连接到核心网，在IAB宿主节点和用户设备(User Equipment，UE)(也称终端)之间设置IAB节点(IAB node)，通过IAB节点的接入链路为UE提供无线接入服务，且通过IAB节点的回传链路连接到IAB宿主节点，以传输UE的业务数据。In the IAB network, the IAB donor (IAB donor) is connected to the core network through a wired link, and an IAB node (IAB node) is set between the IAB donor node and the user equipment (User Equipment, UE) (also known as the terminal), through the IAB node. The access link of the IAB node provides wireless access services for the UE, and is connected to the IAB host node through the backhaul link of the IAB node to transmit service data of the UE.

目前，IAB网络发生拓扑更新时，若IAB节点所连接的IAB宿主改变，源IAB宿主需要获得该IAB节点在目标IAB宿主下的候选小区标识，以传输给该IAB节点的子节点，但目前尚未针对该场景给出解决方案。At present, when the topology update of the IAB network occurs, if the IAB host connected to the IAB node changes, the source IAB host needs to obtain the candidate cell ID of the IAB node under the target IAB host to transmit to the child nodes of the IAB node, but it has not yet been A solution is given for this scenario.

发明内容SUMMARY OF THE INVENTION

本申请实施例提供了一种信息传输方法及其装置，用以将IAB节点在目标IAB宿主CU下的候选小区标识发送给该IAB节点的源IAB宿主CU，以使得该源IAB宿主CU将该候选小区标识传输给该IAB节点的子节点和/或该 IAB节点连接的终端。Embodiments of the present application provide an information transmission method and device thereof, which are used to send the candidate cell identifier of an IAB node under a target IAB host CU to a source IAB host CU of the IAB node, so that the source IAB host CU will The candidate cell identity is transmitted to child nodes of the IAB node and/or terminals connected to the IAB node.

第一方面，提供一种信息传输方法，包括：In a first aspect, an information transmission method is provided, including:

IAB节点的源IAB宿主CU接收来自于所述IAB节点的第一候选小区标识或来自于所述IAB节点的目标IAB宿主CU的第一候选小区标识；所述第一候选小区标识是为向所述目标IAB宿主CU迁移的所述IAB节点分配的，所述第一候选小区标识包括所述IAB节点的子节点和/或所述IAB节点连接的终端的候选小区标识；The source IAB host CU of the IAB node receives the first candidate cell identity from the IAB node or the first candidate cell identity from the target IAB host CU of the IAB node; the first candidate cell identity is for all Assigned by the IAB node to which the target IAB host CU migrates, the first candidate cell identifier includes a candidate cell identifier of a child node of the IAB node and/or a terminal connected to the IAB node;

所述源IAB宿主CU将第二候选小区标识发送给所述IAB节点的子节点和/或所述IAB节点连接的终端，所述第二候选小区标识包括所述第一候选小区标识中的至少一个。The source IAB host CU sends a second candidate cell identifier to a child node of the IAB node and/or a terminal connected to the IAB node, where the second candidate cell identifier includes at least one of the first candidate cell identifiers. One.

可选的，所述IAB节点的源IAB宿主CU接收来自于所述IAB节点的第一候选小区标识，包括：所述源IAB宿主接收所述IAB节点发送的通知消息，所述通知消息携带所述第一候选小区标识，其中，所述通知消息为F1应用协议F1AP消息。Optionally, receiving the first candidate cell identifier from the IAB node by the source IAB host CU of the IAB node includes: receiving, by the source IAB host, a notification message sent by the IAB node, where the notification message carries the the first candidate cell identifier, wherein the notification message is an F1 application protocol F1AP message.

进一步的，所述通知消息还携带所述第一候选小区标识与第三小区标识之间的映射关系，所述第三小区标识为所述IAB节点在所述源IAB宿主CU下时所述IAB节点的小区标识。Further, the notification message also carries a mapping relationship between the first candidate cell identifier and a third cell identifier, where the third cell identifier is the IAB when the IAB node is under the source IAB host CU. The cell ID of the node.

可选的，所述方法还包括：Optionally, the method further includes:

所述源IAB宿主CU向所述目标IAB宿主CU发送切换请求消息；The source IAB host CU sends a handover request message to the target IAB host CU;

所述源IAB宿主CU接收所述目标IAB宿主CU发送的切换请求确认消息，所述切换请求确认消息封装有无线资源控制RRC重配置消息；The source IAB host CU receives a handover request confirmation message sent by the target IAB host CU, where the handover request confirmation message is encapsulated with a radio resource control RRC reconfiguration message;

所述源IAB宿主CU向所述IAB节点发送所述RRC重配置消息。The source IAB host CU sends the RRC reconfiguration message to the IAB node.

可选的，所述IAB节点的源IAB宿主CU接收来自于所述IAB节点的目标IAB宿主CU的第一候选小区标识，包括：Optionally, the source IAB host CU of the IAB node receives the first candidate cell identifier of the target IAB host CU from the IAB node, including:

所述源IAB宿主CU接收所述目标IAB宿主CU的切换请求确认消息，所述切换请求确认消息携带RRC重配置消息以及所述第一候选小区标识；The source IAB host CU receives a handover request confirmation message of the target IAB host CU, where the handover request confirmation message carries an RRC reconfiguration message and the first candidate cell identifier;

进一步的，所述源IAB宿主CU接收所述目标IAB宿主CU的切换请求确认消息之后，还包括：所述源IAB宿主CU确定所述IAB节点的第三小区标识与所述第一候选小区标识间的映射关系，所述第三小区标识为所述IAB节点在所述源IAB宿主CU下时所述IAB节点的小区标识；Further, after the source IAB host CU receives the handover request confirmation message of the target IAB host CU, it further includes: the source IAB host CU determines the third cell identifier of the IAB node and the first candidate cell identifier. The mapping relationship between, the third cell identifier is the cell identifier of the IAB node when the IAB node is under the source IAB host CU;

所述源IAB宿主CU将第二候选小区标识发送给所述IAB节点的子节点和/或所述IAB节点连接的终端，包括：The source IAB donor CU sends the second candidate cell identifier to the child node of the IAB node and/or the terminal connected to the IAB node, including:

所述源IAB宿主CU根据所述映射关系，将所述第一候选小区标识中的至少一个发送给所述IAB节点的子节点和/或所述IAB节点连接的终端。The source IAB host CU sends at least one of the first candidate cell identities to a child node of the IAB node and/or a terminal connected to the IAB node according to the mapping relationship.

可选的，所述第一候选小区标识来自于所述IAB节点时，所述第一候选小区标识是所述IAB节点从所述目标IAB宿主CU获得的；或者，所述第一候选小区标识来自于所述IAB节点时，所述第一候选小区标识是所述IAB节点从OAM网元获得的。Optionally, when the first candidate cell identifier is from the IAB node, the first candidate cell identifier is obtained by the IAB node from the target IAB host CU; or, the first candidate cell identifier When it comes from the IAB node, the first candidate cell identifier is obtained by the IAB node from the OAM network element.

进一步的，所述第一候选小区标识是所述IAB节点与所述目标IAB宿主CU建立F1连接时，根据来自于所述目标IAB宿主CU的F1建立响应消息获取的，所述F1建立响应消息携带所述目标IAB宿主CU为所述IAB节点分配的所述第一候选小区标识。Further, the first candidate cell identifier is obtained according to the F1 establishment response message from the target IAB host CU when the IAB node establishes the F1 connection with the target IAB host CU, the F1 establishment response message. Carrying the first candidate cell identifier allocated by the target IAB host CU to the IAB node.

可选的，所述第一候选小区标识来自于所述目标IAB宿主CU时，所述第一候选小区标识是所述目标IAB宿主CU根据来自于所述IAB节点的F1建立请求消息为所述IAB节点分配的；或者，所述第一候选小区标识来自于所述目标IAB宿主CU时，所述第一候选小区标识是所述目标IAB宿主CU根据从OAM网元获得的。Optionally, when the first candidate cell identifier is from the target IAB host CU, the first candidate cell identifier is the target IAB host CU according to the F1 establishment request message from the IAB node. Assigned by the IAB node; or, when the first candidate cell identifier is from the target IAB donor CU, the first candidate cell identifier is obtained by the target IAB donor CU from the OAM network element.

可选的，所述方法还包括：所述源IAB宿主CU接收来自于所述IAB节点的所述第一候选小区标识与第三小区标识之间的映射关系，所述第三小区标识为所述IAB节点在所述源IAB宿主CU下时所述IAB节点的小区标识；或者，所述源IAB宿主CU确定所述映射关系；Optionally, the method further includes: receiving, by the source IAB host CU, a mapping relationship between the first candidate cell identifier and a third cell identifier from the IAB node, where the third cell identifier is the the cell identifier of the IAB node when the IAB node is under the source IAB host CU; or, the source IAB host CU determines the mapping relationship;

所述源IAB宿主CU将第二候选小区标识发送给所述IAB节点的子节点和/或所述IAB节点连接的终端，包括：所述源IAB宿主CU根据所述映射关系，将所述第一候选小区标识中的至少一个发送给所述IAB节点的子节点和/或所述IAB节点连接的终端。The source IAB host CU sends the second candidate cell identifier to the child node of the IAB node and/or the terminal connected to the IAB node, including: the source IAB host CU, according to the mapping relationship, sends the first At least one of the candidate cell identities is sent to a child node of the IAB node and/or a terminal connected to the IAB node.

可选的，所述源IAB宿主CU将第二候选小区标识发送给所述IAB节点的子节点和/或所述IAB节点连接的终端，包括：所述源IAB宿主CU向所述子节点和/或所述IAB节点连接的终端发送RRC重配置消息，所述RRC重配置消息携带所述第二候选小区标识。Optionally, the source IAB host CU sends the second candidate cell identifier to a child node of the IAB node and/or a terminal connected to the IAB node, including: the source IAB host CU sends the child node and the IAB node to the terminal. /or the terminal connected to the IAB node sends an RRC reconfiguration message, where the RRC reconfiguration message carries the identifier of the second candidate cell.

可选的，所述方法还包括：所述源IAB宿主CU将切换相关的配置信息发送给所述子节点和/或所述IAB节点连接的终端。Optionally, the method further includes: sending, by the source IAB host CU, configuration information related to handover to the child node and/or a terminal connected to the IAB node.

第二方面，提供一种信息传输方法，包括：In a second aspect, an information transmission method is provided, including:

IAB节点的目标IAB宿主CU获得第一候选小区标识；所述第一候选小区标识是为向所述目标IAB宿主CU迁移的所述IAB节点分配的，所述第一候选小区标识包括所述IAB节点的子节点和/或所述IAB节点连接的终端的候选小区标识；The target IAB host CU of the IAB node obtains a first candidate cell identifier; the first candidate cell identifier is allocated for the IAB node migrating to the target IAB host CU, and the first candidate cell identifier includes the IAB The candidate cell identifier of the child node of the node and/or the terminal connected to the IAB node;

所述目标IAB宿主CU将所述第一候选小区标识发送给所述IAB节点的源IAB宿主CU。The target IAB host CU sends the first candidate cell identifier to the source IAB host CU of the IAB node.

可选的，所述IAB节点的目标IAB宿主CU获得第一候选小区标识，包括：Optionally, the target IAB host CU of the IAB node obtains the first candidate cell identifier, including:

所述目标IAB宿主CU接收来自于所述IAB节点的F1建立请求消息；The target IAB host CU receives the F1 establishment request message from the IAB node;

所述目标IAB宿主CU根据所述F1建立请求消息为所述IAB节点分配所述第一候选小区标识，并向所述IAB节点发送F1建立响应消息，所述F1建立响应消息携带所述第一候选小区标识。The target IAB host CU allocates the first candidate cell identifier to the IAB node according to the F1 setup request message, and sends an F1 setup response message to the IAB node, where the F1 setup response message carries the first Candidate cell ID.

可选的，所述IAB节点的目标IAB宿主CU获得第一候选小区标识，包括：所述目标IAB宿主CU从维护操作和管理OAM网元获得所述第一候选小区标识。Optionally, obtaining the first candidate cell identifier by the target IAB donor CU of the IAB node includes: the target IAB donor CU obtains the first candidate cell identifier from a maintenance operation and management OAM network element.

可选的，所述目标IAB宿主CU将所述第一候选小区标识发送给所述IAB节点的源IAB宿主CU，包括：Optionally, the target IAB host CU sends the first candidate cell identifier to the source IAB host CU of the IAB node, including:

所述目标IAB宿主CU接收来自于所述源IAB宿主CU的切换请求消息；The target IAB host CU receives a handover request message from the source IAB host CU;

所述目标IAB宿主CU向所述源IAB宿主CU发送切换请求确认消息，所述切换请求确认消息携带所述第一候选小区标识。The target IAB host CU sends a handover request confirmation message to the source IAB host CU, where the handover request confirmation message carries the first candidate cell identifier.

第三方面，提供一种信息传输方法，包括：In a third aspect, an information transmission method is provided, including:

IAB节点获取第一候选小区标识；所述第一候选小区标识是为向目标IAB宿主CU迁移的所述IAB节点分配的，所述第一候选小区标识包括所述IAB节点的子节点和/或所述IAB节点连接的终端的候选小区标识；The IAB node obtains a first candidate cell identifier; the first candidate cell identifier is allocated for the IAB node migrating to the target IAB host CU, and the first candidate cell identifier includes the child nodes and/or the IAB node. The candidate cell identifier of the terminal connected to the IAB node;

所述IAB节点将所述第一候选小区标识发送给所述IAB节点的源IAB宿主CU。The IAB node sends the first candidate cell identifier to the source IAB host CU of the IAB node.

可选的，所述IAB节点获取第一候选小区标识，包括：Optionally, the IAB node obtains the identifier of the first candidate cell, including:

所述IAB节点向所述IAB节点的目标IAB宿主CU发送F1建立请求消息；The IAB node sends an F1 establishment request message to the target IAB host CU of the IAB node;

所述IAB节点接收所述目标IAB宿主CU发送的F1建立响应消息，所述F1建立响应消息携带所述目标IAB宿主CU为所述IAB节点分配的所述第一候选小区标识。The IAB node receives an F1 setup response message sent by the target IAB host CU, where the F1 setup response message carries the first candidate cell identifier allocated by the target IAB host CU to the IAB node.

可选的，所述IAB节点获取第一候选小区标识，包括：所述IAB节点从OAM网元获取所述第一候选小区标识。Optionally, the IAB node acquiring the first candidate cell identifier includes: the IAB node acquiring the first candidate cell identifier from the OAM network element.

可选的，所述IAB节点将所述第一候选小区标识发送给所述IAB节点的源IAB宿主CU，包括：所述IAB节点向所述源IAB宿主发送的通知消息，所述通知消息携带所述第一候选小区标识，其中，所述通知消息为F1AP消息。Optionally, the IAB node sending the first candidate cell identifier to the source IAB host CU of the IAB node includes: a notification message sent by the IAB node to the source IAB host, the notification message carrying The first candidate cell identifier, wherein the notification message is an F1AP message.

可选的，所述通知消息还携带所述第一候选小区标识与第三小区标识之间的映射关系，所述第三小区标识为所述IAB节点在所述源IAB宿主CU下时所述IAB节点的小区标识。Optionally, the notification message also carries a mapping relationship between the first candidate cell identifier and a third cell identifier, where the third cell identifier is the one described when the IAB node is under the source IAB host CU. The cell identity of the IAB node.

第四方面，提供一种IAB宿主CU设备，包括：In a fourth aspect, an IAB host CU device is provided, including:

接收单元，用于接收来自于IAB节点的第一候选小区标识或来自于所述IAB节点的目标IAB宿主CU的第一候选小区标识；所述第一候选小区标识是为向所述目标IAB宿主CU迁移的所述IAB节点分配的，所述第一候选小区标识包括所述IAB节点的子节点和/或所述IAB节点连接的终端的候选小区标识；A receiving unit, configured to receive a first candidate cell identifier from an IAB node or a first candidate cell identifier from a target IAB host CU of the IAB node; the first candidate cell identifier is for sending to the target IAB host Assigned by the IAB node to which the CU is migrated, the first candidate cell identifier includes a candidate cell identifier of a child node of the IAB node and/or a terminal connected to the IAB node;

发送单元，用于将第二候选小区标识发送给所述IAB节点的子节点和/或所述IAB节点连接的终端，所述第二候选小区标识包括所述第一候选小区标识中的至少一个。A sending unit, configured to send a second candidate cell identifier to a child node of the IAB node and/or a terminal connected to the IAB node, where the second candidate cell identifier includes at least one of the first candidate cell identifiers .

第五方面，提供一种IAB宿主CU设备，包括：In a fifth aspect, an IAB host CU device is provided, including:

处理单元，用于获得第一候选小区标识；所述第一候选小区标识是为向目标IAB宿主CU迁移的IAB节点分配的，所述第一候选小区标识包括所述IAB节点的子节点和/或所述IAB节点连接的终端的候选小区标识；A processing unit, configured to obtain a first candidate cell identifier; the first candidate cell identifier is allocated for the IAB node migrating to the target IAB host CU, and the first candidate cell identifier includes child nodes of the IAB node and/or or the candidate cell identifier of the terminal connected to the IAB node;

发送单元，用于将所述第一候选小区标识发送给所述IAB节点的源IAB宿主CU。A sending unit, configured to send the first candidate cell identifier to the source IAB host CU of the IAB node.

第六方面，提供一种IAB节点设备，包括：In a sixth aspect, an IAB node device is provided, including:

接收单元，用于获取第一候选小区标识；所述第一候选小区标识是为向目标IAB宿主CU迁移的IAB节点分配的，所述第一候选小区标识包括所述IAB节点的子节点和/或所述IAB节点连接的终端的候选小区标识；a receiving unit, configured to obtain a first candidate cell identifier; the first candidate cell identifier is allocated for an IAB node migrating to the target IAB host CU, and the first candidate cell identifier includes a child node of the IAB node and/or or the candidate cell identifier of the terminal connected to the IAB node;

第七方面，提供一种通信装置，包括：处理器、存储器；所述存储器，存储计算机指令；所述处理器，用于读取所述计算机指令，执行如上述第一方面所述的信息传输方法。In a seventh aspect, a communication device is provided, comprising: a processor and a memory; the memory stores computer instructions; the processor is configured to read the computer instructions and execute the information transmission according to the first aspect above method.

第八方面，提供一种通信装置，包括：处理器、存储器；所述存储器，存储计算机指令；所述处理器，用于读取所述计算机指令，执行如上述第二方面所述的信息传输方法。In an eighth aspect, a communication device is provided, comprising: a processor and a memory; the memory stores computer instructions; the processor is configured to read the computer instructions and execute the information transmission according to the second aspect above method.

第九方面，提供一种通信装置，包括：处理器、存储器；所述存储器，存储计算机指令；所述处理器，用于读取所述计算机指令，执行如上述第三方面所述的信息传输方法。In a ninth aspect, a communication device is provided, comprising: a processor and a memory; the memory stores computer instructions; the processor is configured to read the computer instructions and execute the information transmission described in the third aspect above method.

第十方面，提供一种计算机可读存储介质，所述计算机可读存储介质存储有计算机可执行指令，所述计算机可执行指令用于使计算机执行如上述第一方面所述的信息传输方法，或所述计算机可执行指令用于使计算机执行如上述第二方面所述的信息传输方法，所述计算机可执行指令用于使计算机执行如上述第三方面所述的信息传输方法。In a tenth aspect, a computer-readable storage medium is provided, where the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to cause a computer to execute the information transmission method according to the above-mentioned first aspect, Or the computer-executable instructions are used to cause a computer to execute the information transmission method described in the second aspect above, and the computer-executable instructions are used to cause the computer to execute the information transmission method described in the third aspect above.

本申请的上述实施例中，IAB节点的源IAB宿主CU从该IAB节点或该IAB节点的目标IAB宿主CU接收到候选小区标识(该候选小区标识为向目标IAB宿主CU迁移的IAB节点分配的，该候选小区标识包括所述IAB节点的子节点和/或所述IAB节点连接的终端的候选小区标识)后，将该候选小区标识发送给该IAB节点的子节点和/或所述IAB节点连接的终端，从而使得该IAB节点在迁移到目标IAB宿主CU后，该IAB节点的子节点和/或该IAB节点连接的终端可以根据该候选小区标识进行小区测量和小区切换。In the above-mentioned embodiment of the present application, the source IAB host CU of the IAB node receives the candidate cell identifier (the candidate cell identifier is allocated to the IAB node that migrates to the target IAB host CU) from the IAB node or the target IAB host CU of the IAB node. , after the candidate cell identifier includes the child node of the IAB node and/or the candidate cell identifier of the terminal connected to the IAB node), send the candidate cell identifier to the child node of the IAB node and/or the IAB node connected terminal, so that after the IAB node migrates to the target IAB host CU, the child node of the IAB node and/or the terminal connected to the IAB node can perform cell measurement and cell handover according to the candidate cell identifier.

附图说明Description of drawings

为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例中所需要使用的附图作简单地介绍，显而易见地，下面所介绍的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to illustrate the technical solutions of the embodiments of the present application more clearly, the following briefly introduces the drawings that need to be used in the embodiments of the present application. Obviously, the drawings introduced below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

图1为本申请实施例提供的IAB网络拓扑示意图；1 is a schematic diagram of an IAB network topology provided by an embodiment of the present application;

图2为本申请实施例提供的inter-CU切换场景示意图；2 is a schematic diagram of an inter-CU switching scenario provided by an embodiment of the present application;

图3、图4分别为本申请实施例提供的信息传输流程示意图；FIG. 3 and FIG. 4 are schematic diagrams of the information transmission process provided by the embodiments of the present application respectively;

图5至图9分别为本申请实施例提供的迁移节点的候选小区配置信息传输过程的信令交互示意图；FIG. 5 to FIG. 9 are schematic diagrams of signaling interaction of a process of transmitting candidate cell configuration information of a relocation node according to an embodiment of the present application;

图10为本申请实施例提供的IAB宿主CU的结构示意图；10 is a schematic structural diagram of an IAB host CU provided by an embodiment of the present application;

图11为本申请实施例提供的IAB节点设备的结构示意图；FIG. 11 is a schematic structural diagram of an IAB node device provided by an embodiment of the present application;

图12、图13、图14分别为本申请实施例提供的通信装置的结构示意图。FIG. 12 , FIG. 13 , and FIG. 14 are schematic structural diagrams of a communication apparatus provided by an embodiment of the present application, respectively.

具体实施方式Detailed ways

为了使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请作进一步地详细描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

以下对本申请实施例中的部分用语进行解释说明，以便于本领域技术人员理解。Some terms in the embodiments of the present application are explained below to facilitate understanding by those skilled in the art.

(1)本申请实施例中，名词“网络”和“***”经常交替使用，但本领域的技术人员可以理解其含义。(1) In the embodiments of the present application, the terms "network" and "system" are often used interchangeably, but those skilled in the art can understand their meanings.

(2)本申请实施例中术语“多个”是指两个或两个以上，其它量词与之类似。(2) The term "plurality" in the embodiments of the present application refers to two or more than two, and other quantifiers are similar.

(3)“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。(3) "and/or", which describes the relationship of the associated objects, indicates that there can be three kinds of relationships, for example, A and/or B, which can indicate that A exists alone, A and B exist at the same time, and B exists alone. Happening. The character "/" generally indicates that the associated objects are an "or" relationship.

参见图1，为本申请实施例适用的IAB网络拓扑示意图。Referring to FIG. 1 , it is a schematic diagram of an IAB network topology to which this embodiment of the present application is applied.

如图1所示，IAB网络中包括IAB宿主(IAB donor，也称IAB宿主节点)、IAB节点(IAB node)和UE。As shown in FIG. 1, an IAB network includes an IAB donor (IAB donor, also called an IAB donor node), an IAB node (IAB node), and a UE.

IAB宿主包括IAB宿主集中式单元(IAB Centralized Unit，简称IAB donor-CU)和IAB宿主分布式单元(IAB Distributed Unit，简称IAB donor-DU)两部分。其中，一个IAB宿主CU(IAB donor-CU)下可以有多个IAB宿主DU。The IAB host includes two parts: IAB Host Centralized Unit (IAB Donor-CU for short) and IAB Host Distributed Unit (IAB Donor-DU for short). Among them, there can be multiple IAB host DUs under one IAB host CU (IAB donor-CU).

其中，IAB宿主CU还有可能是控制面(Control Plane，CP)和用户面(User Plane，UP)分离的形态，例如，一个IAB宿主CU由一个CU-CP(又称IAB-donor-CU-CP)和多个CU-UP(又称IAB-donor-CU-UP)组成，本申请实施例对此不作限定。Among them, the IAB host CU may also be a form in which the control plane (Control Plane, CP) and the user plane (User Plane, UP) are separated. For example, an IAB host CU consists of a CU-CP (also known as IAB-donor-CU- CP) and multiple CU-UPs (also called IAB-donor-CU-UPs), which are not limited in this embodiment of the present application.

IAB节点(IAB node)由IAB节点DU(IAB Distributed Unit，简称IAB node-DU)和IAB节点移动终端(IAB Mobile Termination，简称IAB node-MT)两部分组成。IAB节点DU(IAB node-DU)通过F1接口连接到IAB宿主CU(IAB donor-CU)，IAB节点MT(IAB node-MT)部分通过Uu接口连接到下一层的IAB节点DU(IAB node-DU)。IAB节点的DU也可以连接UE。The IAB node (IAB node) consists of two parts, the IAB node DU (IAB Distributed Unit, referred to as IAB node-DU) and the IAB node mobile terminal (IAB Mobile Termination, referred to as IAB node-MT). The IAB node DU (IAB node-DU) is connected to the IAB host CU (IAB donor-CU) through the F1 interface, and the IAB node MT (IAB node-MT) part is connected to the IAB node DU (IAB node- DU). The DU of the IAB node can also be connected to the UE.

比如，如图1中，IAB节点1的DU通过F1接口连接IAB宿主CU，LAB节点1的MT通过Uu接口连接UE1。For example, as shown in FIG. 1 , the DU of the IAB node 1 is connected to the IAB host CU through the F1 interface, and the MT of the LAB node 1 is connected to the UE1 through the Uu interface.

IAB节点2的DU通过F1接口连接IAB宿主CU，LAB节点2的MT通过Uu接口连接IAB节点3的DU，以及通过Uu接口连接IAB节点4的DU，LAB节点3的MT通过Uu接口连接UE2。其中，IAB节点3、IAB节点4为IAB节点2的子节点。The DU of the IAB node 2 is connected to the IAB host CU through the F1 interface, the MT of the LAB node 2 is connected to the DU of the IAB node 3 through the Uu interface, and the DU of the IAB node 4 is connected through the Uu interface, and the MT of the LAB node 3 is connected to the UE2 through the Uu interface. The IAB node 3 and the IAB node 4 are child nodes of the IAB node 2 .

上述IAB网络中的UE，也称终端，是一种可以向用户提供语音和/或数据连通性的设备。例如，终端设备包括具有无线连接功能的手持式设备、车载设备等。目前，终端设备可以是：手机(mobile phone)、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(Mobile Internet Device，MID)、可穿戴设备，虚拟现实(Virtual Reality，VR)设备、增强现实(Augmented Reality，AR)设备、工业控制(industrial control)中的无线终端、无人驾驶(self-driving)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端，或智慧家庭(smart home)中的无线终端等。The UE in the above-mentioned IAB network, also called a terminal, is a device that can provide voice and/or data connectivity to a user. For example, the terminal device includes a handheld device with a wireless connection function, a vehicle-mounted device, and the like. At present, terminal devices can be: mobile phone (mobile phone), tablet computer, notebook computer, PDA, mobile Internet device (Mobile Internet Device, MID), wearable device, virtual reality (Virtual Reality, VR) device, augmented reality ( Augmented Reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in smart grid, wireless terminals in transportation safety A wireless terminal, a wireless terminal in a smart city, or a wireless terminal in a smart home, etc.

基于上述IAB网络，IAB节点需要能够从一个IAB宿主CU切换到另一个IAB宿主CU，这种切换也称为CU间(inter-CU)迁移。CU间迁移是迁移节点(迁移节点为IAB节点)以及该迁移节点的子节点和UE，从源IAB宿主CU迁移到目标IAB宿主CU下，即，该迁移节点所连接的IAB宿主CU发生改变。Based on the above-mentioned IAB network, an IAB node needs to be able to switch from one IAB host CU to another IAB host CU, and this switching is also called inter-CU (inter-CU) migration. Inter-CU migration means that a migration node (migration node is an IAB node) and its child nodes and UEs migrate from the source IAB host CU to the target IAB host CU, that is, the IAB host CU connected to the migration node changes.

图2示例性示出了一种CU间(inter-CU)迁移的场景示意图。FIG. 2 exemplarily shows a schematic diagram of a scenario of inter-CU (inter-CU) migration.

如图2所示，IAB节点5为迁移节点，IAB宿主CU1为迁移节点(即IAB节点5)的源IAB宿主CU，IAB宿主CU2为迁移节点(即IAB节点5)的目标IAB宿主CU。迁移节点(即IAB节点5)从IAB宿主CU1迁移到IAB宿主CU2后，IAB节点5下的IAB节点6、IAB节点7和UE均迁移到IAB宿主CU2下。As shown in Figure 2, IAB node 5 is the migration node, IAB host CU1 is the source IAB host CU of the migration node (i.e. IAB node 5), and IAB host CU2 is the target IAB host CU of the migration node (i.e. IAB node 5). After the migration node (ie, the IAB node 5 ) is migrated from the IAB host CU1 to the IAB host CU2 , the IAB node 6 , the IAB node 7 and the UE under the IAB node 5 are all migrated to the IAB host CU2 .

迁移节点迁移到目标IAB宿主CU下之后，该迁移节点的子节点以及UE需要根据该迁移节点在目标IAB宿主CU下的候选小区标识，对相应候选小区进行小区测量，并基于测量结果进行小区切换。但目前尚没有如何将迁移节点在目标IAB宿主CU下的候选小区标识通知给该迁移节点的子节点以及终端的方法。After the migration node migrates to the target IAB host CU, the sub-nodes of the migration node and the UE need to perform cell measurement on the corresponding candidate cells according to the candidate cell identifier of the migration node under the target IAB host CU, and perform cell handover based on the measurement results. . However, there is currently no method of how to notify the sub-nodes and the terminal of the relocated node of the candidate cell identifier of the relocated node under the target IAB host CU.

为此，本申请实施例提供了一种信息传输方法及其装置，用以将IAB节点在目标IAB宿主CU下的候选小区标识发送给该IAB节点的源IAB宿主CU，以使得该源IAB宿主CU将该候选小区标识传输给该IAB节点的子节点和/或该IAB子节点连接的终端，从而使得该子节点和/或该IAB子节点连接的终端能够对相应候选小区进行测量并执行小区切换。To this end, the embodiments of the present application provide an information transmission method and a device thereof, which are used to send the candidate cell identifier of an IAB node under a target IAB host CU to the source IAB host CU of the IAB node, so that the source IAB host The CU transmits the candidate cell identifier to the child node of the IAB node and/or the terminal connected to the IAB child node, so that the child node and/or the terminal connected to the IAB child node can measure the corresponding candidate cell and execute the cell switch.

本申请实施例可以应用于各种移动通信***，例如：新无线(New Radio，NR)***、长期演进(Long Term Evolution，LTE)***、先进的长期演进(Advanced Long Term Evolution，LTE-A)***、演进的长期演进(evolved Long Term Evolution，eLTE)***、未来通信***等其它通信***等，本申请实施例对此不做限制。The embodiments of the present application may be applied to various mobile communication systems, such as: New Radio (New Radio, NR) system, Long Term Evolution (Long Term Evolution, LTE) system, Advanced Long Term Evolution (Advanced Long Term Evolution, LTE-A) Other communication systems such as systems, evolved Long Term Evolution (evolved Long Term Evolution, eLTE) systems, future communication systems, etc., are not limited in this embodiment of the present application.

下面结合附图对本申请实施例进行详细描述。The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

参见图3，为本申请实施例提供的信息传输方法的流程示意图，如图所示，该流程可包括：Referring to FIG. 3, a schematic flowchart of an information transmission method provided by an embodiment of the present application, as shown in the figure, the process may include:

步骤301：IAB节点将第一候选小区标识发送给该IAB节点的源IAB宿主CU。Step 301: The IAB node sends the first candidate cell identifier to the source IAB host CU of the IAB node.

其中，所述第一候选小区标识是为向目标IAB宿主CU迁移的IAB节点分配的，所述第一候选小区标识包括该IAB节点的子节点和/或该IAB节点连接的终端的候选小区标识。可选的，该候选小区标识可以是一个或多个。The first candidate cell identifier is allocated for the IAB node migrating to the target IAB host CU, and the first candidate cell identifier includes the candidate cell identifier of the child node of the IAB node and/or the terminal connected to the IAB node . Optionally, the candidate cell identifiers may be one or more.

可选的，在一些实施例中，IAB节点可通过该IAB节点与源IAB宿主CU 之间的F1接口，将第一候选小区标识发送给源IAB宿主CU。具体的，IAB节点可向源IAB宿主CU发送通知消息，该通知消息携带第一候选小区标识，该通知消息为F1应用协议(F1 Application Protocol，F1AP)消息。Optionally, in some embodiments, the IAB node may send the first candidate cell identifier to the source IAB donor CU through the F1 interface between the IAB node and the source IAB donor CU. Specifically, the IAB node may send a notification message to the source IAB host CU, where the notification message carries the first candidate cell identifier, and the notification message is an F1 Application Protocol (F1 Application Protocol, F1AP) message.

进一步的，IAB节点将第一候选小区标识发送给源IAB宿主CU之前，可与目标IAB宿主CU建立F1连接，并可通过与目标宿主CU之间的F1连接建立过程，从目标IAB宿主CU获取第一候选小区标识，从而在通过F1接口将该第一候选小区标识发送给源IAB宿主CU。可选的，F1连接建立过程可包括：IAB节点的DU向目标IAB宿主CU发送F1建立请求(如F1 setup request)消息，以请求与目标IAB宿主CU建立F1连接；目标IAB宿主CU接收到该F1建立请求消息后，为该IAB节点分配第一候选小区标识，并向该IAB节点发送F1建立响应(F1 setup response)消息，其中携带第一候选小区标识。Further, before sending the first candidate cell identifier to the source IAB host CU, the IAB node can establish an F1 connection with the target IAB host CU, and can obtain the F1 connection from the target IAB host CU through the F1 connection establishment process with the target host CU. The first candidate cell identifier is sent to the source IAB host CU through the F1 interface. Optionally, the F1 connection establishment process may include: the DU of the IAB node sends an F1 establishment request (such as F1 setup request) message to the target IAB host CU to request to establish an F1 connection with the target IAB host CU; the target IAB host CU receives the F1 connection. After the F1 setup request message, the IAB node is allocated a first candidate cell identifier, and an F1 setup response (F1 setup response) message is sent to the IAB node, which carries the first candidate cell identifier.

进一步的，IAB节点通过F1接口将第一候选小区标识发送给源IAB宿主CU后，还可进行MT重配置过程。可选的，MT重配置过程可包括：源IAB宿主CU向目标IAB宿主CU发送切换请求消息；目标IAB宿主CU接收到该切换请求消息后，向源IAB宿主CU发送切换请求确认消息，该切换请求确认消息封装有无线资源控制(Radio Resource Control，RRC)重配置消息；源IAB宿主CU向该IAB节点发送所述RRC重配置消息。Further, after the IAB node sends the first candidate cell identifier to the source IAB host CU through the F1 interface, the MT reconfiguration process may also be performed. Optionally, the MT reconfiguration process may include: the source IAB host CU sends a handover request message to the target IAB host CU; after receiving the handover request message, the target IAB host CU sends a handover request confirmation message to the source IAB host CU. The request confirmation message is encapsulated with a radio resource control (Radio Resource Control, RRC) reconfiguration message; the source IAB host CU sends the RRC reconfiguration message to the IAB node.

可选的，在另一些实施例中，IAB节点将第一候选小区标识发送给源IAB宿主CU之前，可从操作维护和管理(Operations And Maintenance，OAM)网元获得第一候选小区标识。可选的，IAB节点向OAM网元发送获取请求，用于请求获取该IAB节点在该IAB节点的目标IAB宿主CU下时该IAB节点的子节点的候选小区标识；OAM网元接收到该请求消息后，向该IAB节点返回响应消息，该响应消息中携带第一候选小区标识。Optionally, in other embodiments, before sending the first candidate cell identifier to the source IAB host CU, the IAB node may obtain the first candidate cell identifier from an operations and maintenance (Operations And Maintenance, OAM) network element. Optionally, the IAB node sends an acquisition request to the OAM network element, which is used to request to acquire the candidate cell identifier of the child node of the IAB node when the IAB node is under the target IAB host CU of the IAB node; the OAM network element receives the request. After the message is sent, a response message is returned to the IAB node, and the response message carries the identifier of the first candidate cell.

进一步的，IAB节点从OAM获取到第一候选小区标识，并将第一候选小区标识发送给源IAB宿主CU之后，还包括IAB节点与目标IAB宿主CU之间建立F1连接的过程。可选的，所述建立F1连接的过程可包括：IAB节点的DU向目标IAB宿主CU发送F1建立请求(如F1 setup request)消息，以请求与目标IAB宿主CU建立F1连接；目标IAB宿主CU向该IAB节点发送F1建立响应(F1 setup response)消息。Further, after the IAB node obtains the first candidate cell identifier from the OAM and sends the first candidate cell identifier to the source IAB host CU, it also includes a process of establishing an F1 connection between the IAB node and the target IAB host CU. Optionally, the process of establishing the F1 connection may include: the DU of the IAB node sends an F1 establishment request (such as F1 setup request) message to the target IAB host CU to request to establish an F1 connection with the target IAB host CU; the target IAB host CU Send an F1 setup response (F1 setup response) message to the IAB node.

进一步的，IAB节点从OAM获取到第一候选小区标识，并将第一候选小区标识发送给源IAB宿主CU之后，还可进行MT重配置过程。此处，MT重配置过程与前述MT重配置过程相同。Further, after the IAB node obtains the identity of the first candidate cell from the OAM, and sends the identity of the first candidate cell to the source IAB host CU, the MT reconfiguration process may also be performed. Here, the MT reconfiguration process is the same as the aforementioned MT reconfiguration process.

步骤302：源IAB宿主CU将第二候选小区标识发送给该IAB节点的子节点和/或该IAB节点连接的终端。Step 302: The source IAB donor CU sends the second candidate cell identifier to the child node of the IAB node and/or the terminal connected to the IAB node.

可选的，源IAB宿主CU可以决定将第一候选小区标识中的一个或多个配置给该IAB节点的子节点和/或该IAB节点连接的终端。其中，第二候选小区标识包括第一候选小区标识中的至少一个。比如，第一候选小区标识包括小区标识1、小区标识2和小区标识3，则第二候选小区标识可以包括小区标识1、小区标识2和小区标识3，也可以仅包括该3个小区标识中的一部分，比如包括小区标识1和小区标识2，或者仅包括小区标识1。Optionally, the source IAB host CU may decide to configure one or more of the first candidate cell identifiers to a child node of the IAB node and/or a terminal connected to the IAB node. Wherein, the second candidate cell identifier includes at least one of the first candidate cell identifiers. For example, if the first candidate cell identifiers include cell identifier 1, cell identifier 2, and cell identifier 3, the second candidate cell identifier may include cell identifier 1, cell identifier 2, and cell identifier 3, or may only include cell identifiers among the three cell identifiers. A part of , for example, includes cell ID 1 and cell ID 2, or only includes cell ID 1.

可选的，源IAB宿主CU可向IAB节点的子节点和/或该IAB子节点连接的终端发送RRC重配置消息，该RRC重配置消息携带第二候选小区标识，从而将第二候选小区标识发送给该IAB节点的子节点和/或该IAB子节点连接的终端。Optionally, the source IAB host CU may send an RRC reconfiguration message to the child node of the IAB node and/or the terminal connected to the IAB child node, where the RRC reconfiguration message carries the identifier of the second candidate cell, so that the identifier of the second candidate cell is identified. Sent to the child node of the IAB node and/or the terminal connected to the IAB child node.

可选的，源IAB宿主CU还可以将所述第二候选小区标识对应的切换配置信息发送给该IAB节点的子节点和/或该IAB子节点连接的终端。可选的，源IAB宿主CU可通过RRC重配置消息将切换相关的配置信息发送给该IAB节点的子节点和/或该IAB子节点连接的终端。可选的，所述切换相关的配置信息可包括：切换所需的接入配置信息，可选的无线资源配置信息等。Optionally, the source IAB host CU may also send the handover configuration information corresponding to the identifier of the second candidate cell to a child node of the IAB node and/or a terminal connected to the IAB child node. Optionally, the source IAB host CU may send the handover-related configuration information to the child node of the IAB node and/or the terminal connected to the IAB child node through an RRC reconfiguration message. Optionally, the handover-related configuration information may include: access configuration information required for handover, optional radio resource configuration information, and the like.

进一步的，上述流程还可包括以下步骤：Further, the above process may further include the following steps:

步骤303：IAB节点的子节点和/或该IAB子节点连接的终端接收到第二候选小区标识后，根据第二候选小区标识对相应候选小区进行测量，并当根据候选小区测量结果判断满足切换条件时，切换到候选小区。Step 303: After the sub-node of the IAB node and/or the terminal connected to the IAB sub-node receives the identification of the second candidate cell, it measures the corresponding candidate cell according to the identification of the second candidate cell, and judges that the handover is satisfied according to the measurement result of the candidate cell. When conditions are met, switch to the candidate cell.

进一步的，IAB节点还可以将IAB节点迁移前的小区标识(即第三小区标识，也即IAB节点在源IAB宿主CU下时该IAB节点的小区标识)和上述第一候选小区标识之间的映射关系发送给源IAB宿主CU，以使得原IAB宿主CU根据该映射关系进行切换准备以及切换配置。可选的，IAB节点可将该映射关系携带在上述通知消息中发送给源IAB宿主CU。Further, the IAB node may also change the cell identity before the IAB node migration (that is, the third cell identity, that is, the cell identity of the IAB node when the IAB node is under the source IAB host CU) and the above-mentioned first candidate cell identity. The mapping relationship is sent to the source IAB host CU, so that the original IAB host CU performs handover preparation and handover configuration according to the mapping relationship. Optionally, the IAB node may carry the mapping relationship in the above notification message and send it to the source IAB host CU.

其中，上述映射关系中，对于每个第三小区，可配置一个或多个第一候选小区。例如，IAB节点迁移前有三个小区，分别为小区1、小区2和小区3，IAB节点迁移后的候选小区包括小区4、小区5和小区6，IAB节点可确定以下映射关系：小区1对应于小区4，小区2对应于小区4和小区5，小区3对应于小区6。Wherein, in the above mapping relationship, for each third cell, one or more first candidate cells may be configured. For example, before the migration of the IAB node, there are three cells, namely Cell 1, Cell 2 and Cell 3. The candidate cells after the migration of the IAB node include Cell 4, Cell 5 and Cell 6. The IAB node can determine the following mapping relationship: Cell 1 corresponds to Cell 4, cell 2 correspond to cell 4 and cell 5, and cell 3 corresponds to cell 6.

需要说明的是，上述映射关系的依据规则或者依据的策略，可根据实际需要配置，本申请实施例对此不做限制。It should be noted that, the basis rule or the basis policy of the above-mentioned mapping relationship may be configured according to actual needs, which is not limited in this embodiment of the present application.

可选的，源IAB宿主CU可根据该映射关系，将第一候选小区标识中的至少一个发送给IAB节点的子节点和/或该IAB子节点连接的终端。Optionally, the source IAB host CU may send at least one of the first candidate cell identifiers to a sub-node of the IAB node and/or a terminal connected to the IAB sub-node according to the mapping relationship.

仍以上述映射关系为例，若IAB节点的子节点1迁移前有两个小区，分别为小区1和小区2，则源IAB宿主CU向该子节点1发送的RRC重配置消息中携带以下小区标识映射关系：与小区1对应的候选小区为小区4，与小区2对应的候选小区为小区4和小区5；若IAB节点的UE迁移前位于小区3，则源IAB宿主CU向该UE发送的RRC重配置信息中包括以下小区标识映射关系：小区3对应的候选小区为小区6。Still taking the above mapping relationship as an example, if the sub-node 1 of the IAB node has two cells before the migration, namely cell 1 and cell 2, the RRC reconfiguration message sent by the source IAB host CU to the sub-node 1 carries the following cells: Identity mapping relationship: the candidate cell corresponding to cell 1 is cell 4, and the candidate cells corresponding to cell 2 are cell 4 and cell 5; if the UE of the IAB node is located in cell 3 before migration, the source IAB host CU sends the information to the UE. The RRC reconfiguration information includes the following cell identifier mapping relationships: the candidate cell corresponding to cell 3 is cell 6 .

本申请的上述实施例中，源IAB宿主从该IAB节点接收到第一候选小区标识后，将该第一候选小区标识发送给该IAB节点的子节点和/或该IAB子节点连接的终端，从而使得该IAB节点在迁移到目标IAB宿主CU后，该IAB节点的子节点和/或该IAB子节点连接的终端可以根据该候选小区标识进行小区测量和小区切换。In the above embodiment of the present application, after receiving the first candidate cell identifier from the IAB node, the source IAB host sends the first candidate cell identifier to the child node of the IAB node and/or the terminal connected to the IAB child node, Therefore, after the IAB node migrates to the target IAB host CU, the subnode of the IAB node and/or the terminal connected to the IAB subnode can perform cell measurement and cell handover according to the candidate cell identifier.

参见图4，为本申请实施例提供的信息传输方法的流程示意图，如图所示，该流程可包括：Referring to FIG. 4, a schematic flowchart of an information transmission method provided by an embodiment of the present application, as shown in the figure, the process may include:

步骤401：IAB节点的目标IAB宿主CU将第一候选小区标识发送给该IAB节点的源IAB宿主CU。Step 401: The target IAB host CU of the IAB node sends the first candidate cell identifier to the source IAB host CU of the IAB node.

其中，第一候选小区标识的含义与前述实施例相同。The meaning of the first candidate cell identifier is the same as that in the foregoing embodiment.

可选的，目标IAB宿主CU可通过与源IAB宿主CU之间的Xn接口消息，如XnAP消息，将第一候选小区标识发送给源IAB宿主CU。Optionally, the target IAB host CU may send the first candidate cell identifier to the source IAB host CU through an Xn interface message, such as an XnAP message, with the source IAB host CU.

可选的，目标IAB宿主CU可通过针对IAB节点的MT重配置过程，将第一候选小区标识发送给源IAB宿主CU。Optionally, the target IAB host CU may send the first candidate cell identifier to the source IAB host CU through the MT reconfiguration process for the IAB node.

具体的，针对IAB节点的MT重配置过程，可包括：源IAB宿主CU向目标IAB宿主发送切换请求消息，用于请求对IAB节点的MT进行重配置；目标IAB宿主CU接收到该切换请求消息后，向源IAB宿主CU发送切换请求确认消息，所述切换请求确认消息封装有RRC重配置消息以及第一候选小区标识；源IAB宿主CU将该RRC重配置消息发送给该IAB节点。Specifically, for the MT reconfiguration process of the IAB node, it may include: the source IAB host CU sends a handover request message to the target IAB host, which is used to request the MT of the IAB node to be reconfigured; the target IAB host CU receives the handover request message. Then, send a handover request confirmation message to the source IAB host CU, where the handover request confirmation message encapsulates the RRC reconfiguration message and the first candidate cell identifier; the source IAB host CU sends the RRC reconfiguration message to the IAB node.

可选的，在一些实施例中，目标IAB宿主CU在将第一候选小区标识发送给源IAB宿主CU之前，IAB节点与目标IAB宿主CU建立F1连接，并通过该F1连接建立过程使得目标IAB宿主CU为该IAB节点分配第一候选小区标识，从而在步骤401中，使得目标IAB宿主CU将该第一候选小区标识发送给源IAB宿主CU。可选的，F1连接建立过程可包括：IAB节点的DU向目标IAB宿主CU发送F1建立请求(如F1 setup request)消息，以请求与目标IAB宿主CU建立F1连接；目标IAB宿主CU接收到该F1建立请求消息后，为该IAB节点分配第一候选小区标识，并向该IAB节点发送F1建立响应(F1 setup response)消息，其中携带第一候选小区标识。Optionally, in some embodiments, before the target IAB host CU sends the first candidate cell identifier to the source IAB host CU, the IAB node establishes an F1 connection with the target IAB host CU, and makes the target IAB through the F1 connection establishment process. The donor CU allocates the first candidate cell identifier to the IAB node, so that in step 401, the target IAB donor CU sends the first candidate cell identifier to the source IAB donor CU. Optionally, the F1 connection establishment process may include: the DU of the IAB node sends an F1 establishment request (such as F1 setup request) message to the target IAB host CU to request to establish an F1 connection with the target IAB host CU; the target IAB host CU receives the F1 connection. After the F1 setup request message, the IAB node is allocated a first candidate cell identifier, and an F1 setup response (F1 setup response) message is sent to the IAB node, which carries the first candidate cell identifier.

可选的，在另一些实施例中，目标IAB宿主CU将第一候选小区标识发送给源IAB宿主CU之前，从OAM网元获得第一候选小区标识，从而在步骤401中，目标IAB宿主CU将该第一候选小区标识发送给源IAB宿主CU。Optionally, in some other embodiments, before the target IAB host CU sends the first candidate cell identifier to the source IAB host CU, it obtains the first candidate cell identifier from the OAM network element, so that in step 401, the target IAB host CU obtains the first candidate cell identifier. The first candidate cell identity is sent to the source IAB donor CU.

可选的，目标IAB宿主CU从OAM获得第一候选小区标识的过程，可包括：目标IAB宿主CU向OAM网元发送获取请求，用于请求获取该IAB节点在该IAB节点的目标IAB宿主CU下时该IAB节点的子节点的候选小区标识；OAM网元接收到该请求消息后，向该目标IAB宿主CU返回响应消息，该响应消息中携带第一候选小区标识。Optionally, the process for the target IAB host CU to obtain the first candidate cell identifier from the OAM may include: the target IAB host CU sends an acquisition request to the OAM network element for requesting to acquire the target IAB host CU of the IAB node at the IAB node. Next, the candidate cell identifier of the child node of the IAB node; after receiving the request message, the OAM network element returns a response message to the target IAB host CU, and the response message carries the first candidate cell identifier.

可选的，IAB节点还与目标IAB宿主CU建立F1连接。可选的，F1连接建立过程可包括：IAB节点的DU向目标IAB宿主CU发送F1建立请求(如F1 setup request)消息；目标IAB宿主CU接收到该F1建立请求消息后，向该IAB节点发送F1建立响应(F1 setup response)消息。Optionally, the IAB node further establishes an F1 connection with the target IAB host CU. Optionally, the F1 connection establishment process may include: the DU of the IAB node sends an F1 establishment request (such as F1 setup request) message to the target IAB host CU; after the target IAB host CU receives the F1 establishment request message, it sends to the IAB node. F1 setup response (F1 setup response) message.

可选的，源IAB宿主CU获得第一候选小区标识后，可确定迁移前的小区标识(即第三小区标识，也即IAB节点在源IAB宿主CU下时该IAB节点的小区标识)和上述第一候选小区标识之间的映射关系。Optionally, after the source IAB host CU obtains the first candidate cell identity, it can determine the pre-migration cell identity (that is, the third cell identity, that is, the cell identity of the IAB node when the IAB node is under the source IAB host CU) and the above-mentioned cell identity. The mapping relationship between the identifiers of the first candidate cells.

步骤402：源IAB宿主CU将第二候选小区标识发送给该IAB节点的子节点和/或该IAB子节点连接的终端。Step 402: The source IAB host CU sends the second candidate cell identifier to the child node of the IAB node and/or the terminal connected to the IAB child node.

可选的，源IAB宿主CU可以决定将第一候选小区标识中的一个或多个配置给该IAB节点的子节点和/或该IAB子节点连接的终端。其中，所述第二候选小区标识包括所述第一候选小区标识中的至少一个。Optionally, the source IAB host CU may decide to configure one or more of the first candidate cell identities to a child node of the IAB node and/or a terminal connected to the IAB child node. Wherein, the second candidate cell identifier includes at least one of the first candidate cell identifiers.

可选的，源IAB宿主CU可根据上述映射关系，将第一候选小区标识中的至少一个发送给所述IAB节点的子节点和/或该IAB子节点连接的终端。Optionally, the source IAB host CU may send at least one of the first candidate cell identities to a sub-node of the IAB node and/or a terminal connected to the IAB sub-node according to the above-mentioned mapping relationship.

该步骤的具体实现方式与图3所示流程中的相关内容相同，在此不再重复。The specific implementation manner of this step is the same as the related content in the process shown in FIG. 3 , and will not be repeated here.

可选的，源IAB宿主CU还可以将所述第二候选小区标识对应的切换配置信息发送给该IAB节点的子节点和/或该IAB子节点连接的终端。可选的，源IAB宿主CU可通过RRC重配置消息将切换相关的配置信息发送给该IAB节点的子节点和/或该IAB子节点连接的终端。Optionally, the source IAB host CU may also send the handover configuration information corresponding to the identifier of the second candidate cell to a child node of the IAB node and/or a terminal connected to the IAB child node. Optionally, the source IAB host CU may send the handover-related configuration information to the child node of the IAB node and/or the terminal connected to the IAB child node through an RRC reconfiguration message.

步骤403：IAB节点的子节点和/或该IAB子节点连接的终端接收到所述第二候选小区标识后，根据第二候选小区标识对相应候选小区进行测量，并当根据候选小区测量结果判断满足切换条件时，切换到候选小区。Step 403: After the sub-node of the IAB node and/or the terminal connected to the IAB sub-node receives the identifier of the second candidate cell, it measures the corresponding candidate cell according to the identifier of the second candidate cell, and judges according to the measurement result of the candidate cell. When the handover condition is satisfied, handover to the candidate cell.

本申请的上述实施例中，IAB节点的源IAB宿主CU从该IAB节点的目标IAB宿主CU接收到候选小区标识(该候选小区标识即为该IAB节点在目标IAB宿主CU下时该IAB节点的子节点的候选小区标识)后，将该候选小区标识发送给该IAB节点的子节点和/或该IAB子节点连接的终端，从而使得该IAB节点在迁移到目标IAB宿主CU后，该IAB节点的子节点可以根据该候选小区标识进行小区测量和小区切换。In the above embodiments of the present application, the source IAB host CU of the IAB node receives the candidate cell identifier from the target IAB host CU of the IAB node (the candidate cell identifier is the ID of the IAB node when the IAB node is under the target IAB host CU. After the candidate cell identifier of the child node), the candidate cell identifier is sent to the child node of the IAB node and/or the terminal connected to the IAB child node, so that after the IAB node migrates to the target IAB host CU, the IAB node The child node of the can perform cell measurement and cell handover according to the candidate cell identifier.

基于图3所示的流程，图5示例性示出了一种具体场景下的信令交互流程。该流程中，IAB节点从目标IAB宿主CU获取到该IAB节点在目标IAB宿主CU下时，该IAB节点的候选小区标识，并将该候选小区标识发送给源IAB宿主CU，以使得原IAB宿主CU将该候选小区标识发送给该IAB节点的子节点和/或该IAB子节点连接的终端。Based on the process shown in FIG. 3 , FIG. 5 exemplarily shows a signaling interaction process in a specific scenario. In this process, the IAB node obtains from the target IAB host CU the candidate cell identifier of the IAB node when the IAB node is under the target IAB host CU, and sends the candidate cell identifier to the source IAB host CU, so that the original IAB host The CU sends the candidate cell identifier to a child node of the IAB node and/or a terminal connected to the IAB child node.

如图所示，IAB节点1为迁移节点，IAB节点2为IAB节点1的子节点，UE为连接在IAB节点1下的终端。该流程可包括如下步骤：As shown in the figure, the IAB node 1 is a migration node, the IAB node 2 is a child node of the IAB node 1, and the UE is a terminal connected to the IAB node 1. The process may include the following steps:

步骤501：IAB节点1的DU与目标IAB宿主CU之间进行F1连接建立过程。通过该过程，目标IAB宿主CU为IAB节点1分配第一候选小区ID，并将第一候选小区ID发送给该IAB节点。Step 501: An F1 connection establishment process is performed between the DU of the IAB node 1 and the target IAB host CU. Through this process, the target IAB host CU allocates the first candidate cell ID to the IAB node 1, and sends the first candidate cell ID to the IAB node.

其中，所述第一候选小区ID，可包括一个或多个候选小区的ID。The first candidate cell ID may include IDs of one or more candidate cells.

可选的，F1连接建立过程可包括如下步骤：Optionally, the F1 connection establishment process may include the following steps:

IAB节点DU向目标IAB宿主CU发送F1建立请求(F1 setup request)消息，以请求与目标IAB宿主CU建立F1连接；The IAB node DU sends an F1 setup request (F1 setup request) message to the target IAB host CU to request the establishment of an F1 connection with the target IAB host CU;

目标IAB宿主CU为该IAB节点分配第一候选小区ID，并向该IAB节点发送F1建立响应(F1 setup response)消息，其中携带第一候选小区ID。The target IAB host CU allocates the first candidate cell ID to the IAB node, and sends an F1 setup response (F1 setup response) message to the IAB node, which carries the first candidate cell ID.

步骤502：IAB节点向源IAB宿主CU发送通知消息，所述通知消息携带第一候选小区ID。Step 502: The IAB node sends a notification message to the source IAB host CU, where the notification message carries the ID of the first candidate cell.

其中，该通知消息为F1AP消息。该步骤中，IAB节点通过与源IAB宿主CU间的F1连接，将第一候选小区ID发送给源IAB宿主CU。The notification message is an F1AP message. In this step, the IAB node sends the first candidate cell ID to the source IAB host CU through the F1 connection with the source IAB host CU.

可选的，IAB节点1的第一候选小区ID与IAB节点1原有的小区ID(原有的候选小区ID是指IAB节点1在源IAB宿主CU下，该IAB节点的小区 ID)之间的映射关系，可由该IAB节点1的DU来决定。可选的，IAB节点1可根据OAM网元的配置来决定新的候选小区ID与原有的小区ID之间的映射关系。Optionally, between the first candidate cell ID of the IAB node 1 and the original cell ID of the IAB node 1 (the original candidate cell ID refers to the cell ID of the IAB node under the source IAB host CU of the IAB node 1). The mapping relationship can be determined by the DU of the IAB node 1. Optionally, the IAB node 1 may determine the mapping relationship between the new candidate cell ID and the original cell ID according to the configuration of the OAM network element.

可选的，IAB节点1可将上述候选小区ID与原有的小区ID之间的映射关系，通过上述通知消息发送给源IAB宿主CU，以使得源IAB宿主CU根据该映射关系进行切换准备以及切换配置。Optionally, the IAB node 1 may send the mapping relationship between the candidate cell ID and the original cell ID to the source IAB host CU through the above notification message, so that the source IAB host CU performs handover preparation and Toggle configuration.

步骤503：IAB节点1进行MT重配置过程。Step 503: The IAB node 1 performs the MT reconfiguration process.

可选的，IAB节点1的MT重配置过程可包括如下步骤：Optionally, the MT reconfiguration process of the IAB node 1 may include the following steps:

源IAB宿主CU通过与目标IAB宿主CU的Xn接口发送切换请求(Xn handover request)消息给目标IAB宿主CU，用于请求对IAB节点1的MT进行重配置；目标IAB宿主CU接收到该切换请求消息后，为IAB节点1分配资源，然后，通过Xn接口向源IAB宿主CU发送切换请求确认(Xn handover request ACK)消息，其中封装有用于发送给IAB节点1的RRC重配置消息，该RRC重配置消息携带相关配置信息；源IAB宿主CU将该RRC重配置消息发送给IAB节点1，使得IAB节点1进行MT重配置。The source IAB host CU sends a handover request (Xn handover request) message to the target IAB host CU through the Xn interface with the target IAB host CU, which is used to request to reconfigure the MT of the IAB node 1; the target IAB host CU receives the handover request. After the message, allocate resources for IAB node 1, and then send a handover request acknowledgment (Xn handover request ACK) message to the source IAB host CU through the Xn interface, which encapsulates an RRC reconfiguration message for sending to IAB node 1. The configuration message carries relevant configuration information; the source IAB host CU sends the RRC reconfiguration message to the IAB node 1, so that the IAB node 1 performs MT reconfiguration.

步骤504：源IAB宿主CU向IAB节点2发送RRC重配置消息，其中携带第二候选小区ID。Step 504: The source IAB host CU sends an RRC reconfiguration message to the IAB node 2, which carries the second candidate cell ID.

可选的，源IAB宿主CU根据上述映射关系(第三小区标识与第一候选小区标识的映射关系)，以及IAB节点2在迁移前的小区，向IAB节点2发送RRC重配置消息。Optionally, the source IAB host CU sends an RRC reconfiguration message to the IAB node 2 according to the above mapping relationship (the mapping relationship between the third cell identifier and the first candidate cell identifier) and the cell of the IAB node 2 before the migration.

可选的，RRC重配置消息中携带的第二候选小区ID，可以是IAB节点1发送给源IAB宿主CU的第一候选小区ID中的至少一个。Optionally, the second candidate cell ID carried in the RRC reconfiguration message may be at least one of the first candidate cell IDs sent by the IAB node 1 to the source IAB host CU.

可选的，所述RRC重配置消息中还可携带该IAB节点的子节点和/或UE接入候选小区时所需的切换相关配置信息。可选的，所述切换相关配置信息可包括：切换所需的接入配置信息，可选的无线资源配置信息等。Optionally, the RRC reconfiguration message may further carry handover-related configuration information required when the subnode of the IAB node and/or the UE accesses the candidate cell. Optionally, the handover-related configuration information may include: access configuration information required for handover, optional radio resource configuration information, and the like.

步骤505：源IAB宿主CU向UE发送RRC重配置消息，其中携带第二候选小区ID。Step 505: The source IAB donor CU sends an RRC reconfiguration message to the UE, which carries the second candidate cell ID.

可选的，源IAB宿主CU根据上述映射关系(第三小区标识与第一候选小区标识的映射关系)，以及该UE在迁移前的小区，向IAB节点2发送RRC重配置消息。Optionally, the source IAB donor CU sends an RRC reconfiguration message to the IAB node 2 according to the above mapping relationship (the mapping relationship between the third cell identifier and the first candidate cell identifier) and the cell of the UE before migration.

步骤506：IAB节点2接收到RRC重配置消息后，进行候选小区配置，对候选小区的信号质量进行测量，并当候选小区的信号质量满足切换条件时，进行小区切换。Step 506: After receiving the RRC reconfiguration message, the IAB node 2 performs candidate cell configuration, measures the signal quality of the candidate cell, and performs cell handover when the signal quality of the candidate cell satisfies the handover condition.

该步骤中，IAB节点2可以根据RRC重配置消息携带的切换相关配置信息和第二候选小区ID进行配置，但不生效，直到检测到某个候选小区符合切换条件时，对应的切换相关配置信息才生效，以使得IAB节点2根据生效的切换相关配置信息执行小区切换。In this step, the IAB node 2 can perform configuration according to the handover-related configuration information and the second candidate cell ID carried in the RRC reconfiguration message, but it does not take effect until it is detected that a candidate cell meets the handover conditions, and the corresponding handover-related configuration information It takes effect, so that the IAB node 2 performs cell handover according to the handover-related configuration information that is in effect.

步骤507：UE接收到RRC重配置消息后，进行候选小区配置，对候选小区的信号质量进行测量，并当候选小区的信号质量满足切换条件时，进行小区切换。Step 507: After receiving the RRC reconfiguration message, the UE performs candidate cell configuration, measures the signal quality of the candidate cell, and performs cell handover when the signal quality of the candidate cell satisfies the handover condition.

该步骤中，UE可以根据RRC重配置消息携带的切换相关配置信息和第二候选小区ID进行配置，但不生效，直到检测到某个候选小区符合切换条件时，对应的切换相关配置信息才生效，以使得该UE根据生效的切换相关配置信息执行小区切换。In this step, the UE may perform configuration according to the handover-related configuration information and the second candidate cell ID carried in the RRC reconfiguration message, but it does not take effect, and the corresponding handover-related configuration information does not take effect until it detects that a candidate cell meets the handover conditions , so that the UE performs cell handover according to the effective handover-related configuration information.

需要说明的是，上述图5流程中各步骤的时序仅为一种示例，比如，在其他一些场景中，步骤504和步骤505可以交换顺序，步骤503也可以发生在步骤501之前，本申请实施例对此不作限制。如果步骤503发生在步骤501之前。则IAB节点1的MT需要支持双连接。It should be noted that the sequence of each step in the above flow of FIG. 5 is only an example. For example, in some other scenarios, the sequence of step 504 and step 505 may be exchanged, and step 503 may also occur before step 501. This application implements The example does not limit this. If step 503 occurs before step 501. Then the MT of the IAB node 1 needs to support dual connectivity.

基于图3所示的流程，图6示例性示出了一种具体场景下的信令交互流程。该流程与图5所示流程不同的是，IAB节点从OAM网元获取该IAB节点在目标IAB宿主CU下时该IAB节点的候选小区标识。Based on the flow shown in Fig. 3, Fig. 6 exemplarily shows a signaling interaction flow in a specific scenario. The difference between this process and the process shown in FIG. 5 is that the IAB node obtains the candidate cell identifier of the IAB node when the IAB node is under the target IAB host CU from the OAM network element.

步骤601：LAB节点1从OAM网元获取第一候选小区ID。Step 601: The LAB node 1 obtains the ID of the first candidate cell from the OAM network element.

可选的，IAB节点1可向OAM网元发送获取请求消息，用于请求获取该IAB节点1在目标IAB宿主CU下的子节点的候选小区ID；OAM网元向该IAB节点1发送获取响应消息，其中携带IAB节点1在目标IAB宿主CU下的子节点的候选小区ID。Optionally, the IAB node 1 may send an acquisition request message to the OAM network element, which is used to request to acquire the candidate cell ID of the child node of the IAB node 1 under the target IAB host CU; the OAM network element sends an acquisition response to the IAB node 1. message, which carries the candidate cell ID of the child node of the IAB node 1 under the target IAB host CU.

步骤602：IAB节点向源IAB宿主CU发送通知消息，所述通知消息携带所述第一候选小区ID。Step 602: The IAB node sends a notification message to the source IAB host CU, where the notification message carries the ID of the first candidate cell.

该步骤的具体实现与图5所示流程中的相关内容相同，在此不再重复。The specific implementation of this step is the same as the related content in the flow shown in FIG. 5 , and will not be repeated here.

步骤603：IAB节点1进行MT重配置过程。Step 603: The IAB node 1 performs the MT reconfiguration process.

步骤604：IAB节点1的DU与目标IAB宿主CU之间进行F1连接建立过程。Step 604: An F1 connection establishment process is performed between the DU of the IAB node 1 and the target IAB host CU.

可选的，所述F1连接建立过程可包括：IAB节点DU向目标IAB宿主CU发送F1建立请求(F1 setup request)消息，以请求与目标IAB宿主CU建立F1连接；目标IAB宿主CU向该IAB节点发送F1建立响应(F1 setup response)消息。Optionally, the F1 connection establishment process may include: the IAB node DU sends an F1 setup request (F1 setup request) message to the target IAB host CU to request to establish an F1 connection with the target IAB host CU; the target IAB host CU sends the IAB to the F1 connection; The node sends an F1 setup response (F1 setup response) message.

步骤605：源IAB宿主CU向IAB节点2发送RRC重配置消息，其中携带第二候选小区ID。Step 605: The source IAB host CU sends an RRC reconfiguration message to the IAB node 2, which carries the second candidate cell ID.

步骤606：源IAB宿主CU向UE发送RRC重配置消息，其中携带第二候选小区ID。Step 606: The source IAB donor CU sends an RRC reconfiguration message to the UE, which carries the second candidate cell ID.

步骤607：IAB节点2接收到RRC重配置消息后，进行候选小区配置，对候选小区的信号质量进行测量，并当候选小区的信号质量满足切换条件时，进行小区切换。Step 607: After receiving the RRC reconfiguration message, the IAB node 2 performs candidate cell configuration, measures the signal quality of the candidate cell, and performs cell handover when the signal quality of the candidate cell satisfies the handover condition.

步骤608：UE接收到RRC重配置消息后，进行候选小区配置，对候选小区的信号质量进行测量，并当候选小区的信号质量满足切换条件时，进行小区切换。Step 608: After receiving the RRC reconfiguration message, the UE performs candidate cell configuration, measures the signal quality of the candidate cell, and performs cell handover when the signal quality of the candidate cell satisfies the handover condition.

图6所示的流程中，步骤605至步骤608的具体实现过程，与图5所示流程中的相关步骤相同，在此不再重复。In the flow shown in FIG. 6 , the specific implementation process of steps 605 to 608 is the same as the relevant steps in the flow shown in FIG. 5 , and will not be repeated here.

需要说明的是，上述图6流程中各步骤的时序仅为一种示例，比如，在其他一些场景中，步骤603和步骤604可以交换顺序，本申请实施例对此不作限制。It should be noted that the sequence of each step in the above process of FIG. 6 is only an example. For example, in some other scenarios, the sequence of step 603 and step 604 may be interchanged, which is not limited in this embodiment of the present application.

基于图4所示的流程，图7示例性示出了一种具体场景下的信令交互流程。该流程中，目标IAB宿主CU通过与源IAB宿主CU间的接口，将IAB节点的候选小区标识发送给源IAB宿主CU，以使得原IAB宿主CU将该候选小区标识发送给该IAB节点的子节点和/或该IAB子节点连接的终端。Based on the process shown in FIG. 4 , FIG. 7 exemplarily shows a signaling interaction process in a specific scenario. In this process, the target IAB host CU sends the candidate cell identifier of the IAB node to the source IAB host CU through the interface with the source IAB host CU, so that the original IAB host CU sends the candidate cell identifier to the child of the IAB node The node and/or the terminal to which this IAB child node is connected.

步骤701：IAB节点1的DU与目标IAB宿主CU之间进行F1连接建立过程。通过该过程，目标IAB宿主CU为IAB节点1分配第一候选小区ID。Step 701: An F1 connection establishment process is performed between the DU of the IAB node 1 and the target IAB host CU. Through this process, the target IAB host CU allocates the first candidate cell ID to the IAB Node 1 .

可选的，F1连接建立过程可包括如下步骤：IAB节点DU向目标IAB宿主CU发送F1建立请求(F1 setup request)消息，以请求与目标IAB宿主CU建立F1连接；目标IAB宿主CU为该IAB节点分配第一候选小区ID，并向该IAB节点发送F1建立响应(F1 setup response)消息，可选的，该F1建立响应消息中可携带第一候选小区ID。Optionally, the F1 connection establishment process may include the following steps: the IAB node DU sends an F1 setup request (F1 setup request) message to the target IAB host CU to request to establish an F1 connection with the target IAB host CU; the target IAB host CU is the IAB. The node allocates the first candidate cell ID, and sends an F1 setup response (F1 setup response) message to the IAB node. Optionally, the F1 setup response message may carry the first candidate cell ID.

步骤702：IAB节点1进行MT重配置过程。通过该过程，目标IAB宿主CU通过与源IAB宿主CU间的接口，将第一候选小区标识发送给目标IAB宿主CU。Step 702: The IAB node 1 performs the MT reconfiguration process. Through this process, the target IAB host CU sends the first candidate cell identifier to the target IAB host CU through the interface with the source IAB host CU.

源IAB宿主CU通过与目标IAB宿主CU的Xn接口发送切换请求(Xn handover request)消息给目标IAB宿主CU；The source IAB host CU sends a handover request (Xn handover request) message to the target IAB host CU through the Xn interface with the target IAB host CU;

目标IAB宿主CU接收到该切换请求消息后，通过Xn接口向源IAB宿主CU发送切换请求确认(Xn handover request ACK)消息，该切换请求确认消息携带第一候选小区ID，可选的，该切换请求确认消息还可携带切换相关配置信息，该切换相关配置信息为IAB节点1的子节点接入候选小区所需资源配置；该切换请求确认消息中还封装有RRC重配置消息；After receiving the handover request message, the target IAB host CU sends a handover request acknowledgment (Xn handover request ACK) message to the source IAB host CU through the Xn interface. The handover request acknowledgment message carries the ID of the first candidate cell. The request confirmation message can also carry handover related configuration information, and the handover related configuration information is the resource configuration required by the child node of the IAB node 1 to access the candidate cell; the handover request confirmation message also encapsulates an RRC reconfiguration message;

源IAB宿主CU将该RRC重配置消息发送给IAB节点1，使得IAB节点1进行MT重配置。The source IAB host CU sends the RRC reconfiguration message to the IAB node 1, so that the IAB node 1 performs MT reconfiguration.

可选的，源IAB宿主CU在获得第一候选小区ID后，确定第三小区ID(即IAB节点1在源IAB宿主CU下时该IAB节点的小区标识)与第一候选小区ID之间的映射关系。Optionally, after obtaining the first candidate cell ID, the source IAB host CU determines the difference between the third cell ID (that is, the cell identifier of the IAB node when the IAB node 1 is under the source IAB host CU) and the first candidate cell ID. Mapping relations.

步骤703：源IAB宿主CU向IAB节点2发送RRC重配置消息，其中携带第二候选小区ID。Step 703: The source IAB host CU sends an RRC reconfiguration message to the IAB node 2, which carries the second candidate cell ID.

步骤704：源IAB宿主CU向UE发送RRC重配置消息，其中携带第二候选小区ID。Step 704: The source IAB donor CU sends an RRC reconfiguration message to the UE, which carries the second candidate cell ID.

步骤705：IAB节点2接收到RRC重配置消息后，进行候选小区配置，对候选小区的信号质量进行测量，并当候选小区的信号质量满足切换条件时，进行小区切换。Step 705: After receiving the RRC reconfiguration message, the IAB node 2 performs candidate cell configuration, measures the signal quality of the candidate cell, and performs cell handover when the signal quality of the candidate cell satisfies the handover condition.

步骤706：UE接收到RRC重配置消息后，进行候选小区配置，对候选小区的信号质量进行测量，并当候选小区的信号质量满足切换条件时，进行小区切换。Step 706: After receiving the RRC reconfiguration message, the UE performs candidate cell configuration, measures the signal quality of the candidate cell, and performs cell handover when the signal quality of the candidate cell satisfies the handover condition.

图6所示的流程中，步骤703至步骤706的具体实现过程，与图5所示流程中的相关步骤相同，在此不再重复。In the flow shown in FIG. 6 , the specific implementation process of steps 703 to 706 is the same as the relevant steps in the flow shown in FIG. 5 , and will not be repeated here.

需要说明的是，上述图7流程中各步骤的时序仅为一种示例，比如，在其他一些场景中，步骤704和步骤703可以交换顺序，本申请实施例对此不作限制。It should be noted that the sequence of each step in the above process of FIG. 7 is only an example. For example, in some other scenarios, the sequence of step 704 and step 703 may be interchanged, which is not limited in this embodiment of the present application.

基于图4所示的流程，图8示例性示出了一种具体场景下的信令交互流程。该流程与图7所示流程不同的是，IAB节点从OAM网元获取该IAB节点在目标IAB宿主CU下时该IAB节点的候选小区标识。Based on the process shown in FIG. 4 , FIG. 8 exemplarily shows a signaling interaction process in a specific scenario. The difference between this process and the process shown in Figure 7 is that the IAB node obtains the candidate cell identifier of the IAB node when the IAB node is under the target IAB host CU from the OAM network element.

步骤801：LAB节点1从OAM网元获取第一候选小区ID。Step 801: The LAB node 1 obtains the ID of the first candidate cell from the OAM network element.

该步骤的具体实现过程与图6所示流程中的相关内容相同，在此不再重复。The specific implementation process of this step is the same as the related content in the flow shown in FIG. 6 , and will not be repeated here.

步骤802：IAB节点1的DU与目标IAB宿主CU之间进行F1连接建立过程。通过该过程，IAB节点1将第一候选小区ID发送给目标IAB宿主CU。Step 802: An F1 connection establishment process is performed between the DU of the IAB node 1 and the target IAB host CU. Through this process, the IAB node 1 sends the first candidate cell ID to the target IAB host CU.

可选的，F1连接建立过程可包括如下步骤：IAB节点DU向目标IAB宿主CU发送F1建立请求(F1 setup request)消息，以请求与目标IAB宿主CU建立F1连接，该请求消息中携带第一候选小区ID；目标IAB宿主CU向该IAB节点发送F1建立响应(F1 setup response)消息。Optionally, the F1 connection establishment process may include the following steps: the IAB node DU sends an F1 setup request (F1 setup request) message to the target IAB host CU to request to establish an F1 connection with the target IAB host CU, and the request message carries the first F1 connection. Candidate cell ID; the target IAB host CU sends an F1 setup response (F1 setup response) message to the IAB node.

步骤803：IAB节点1进行MT重配置过程。通过该过程，目标IAB宿主CU通过与源IAB宿主CU间的接口，将第一候选小区标识发送给目标IAB宿主CU。Step 803: The IAB node 1 performs the MT reconfiguration process. Through this process, the target IAB host CU sends the first candidate cell identifier to the target IAB host CU through the interface with the source IAB host CU.

该步骤的具体实现，与图7所示流程中的相关内容相同，在此不再重复。The specific implementation of this step is the same as the related content in the flow shown in FIG. 7 , and will not be repeated here.

步骤804：源IAB宿主CU向IAB节点2发送RRC重配置消息，其中携带第二候选小区ID。Step 804: The source IAB host CU sends an RRC reconfiguration message to the IAB node 2, which carries the second candidate cell ID.

步骤805：源IAB宿主CU向UE发送RRC重配置消息，其中携带第二候选小区ID。Step 805: The source IAB donor CU sends an RRC reconfiguration message to the UE, which carries the second candidate cell ID.

步骤806：IAB节点2接收到RRC重配置消息后，进行候选小区配置，对候选小区的信号质量进行测量，并当候选小区的信号质量满足切换条件时，进行小区切换。Step 806: After receiving the RRC reconfiguration message, the IAB node 2 performs candidate cell configuration, measures the signal quality of the candidate cell, and performs cell handover when the signal quality of the candidate cell satisfies the handover condition.

步骤807：UE接收到RRC重配置消息后，进行候选小区配置，对候选小区的信号质量进行测量，并当候选小区的信号质量满足切换条件时，进行小区切换。Step 807: After receiving the RRC reconfiguration message, the UE performs candidate cell configuration, measures the signal quality of the candidate cell, and performs cell handover when the signal quality of the candidate cell satisfies the handover condition.

图8所示的流程中，步骤804至步骤807的具体实现过程，与图7所示流程中的相关步骤相同，在此不再重复。In the flow shown in FIG. 8 , the specific implementation process of steps 804 to 807 is the same as the relevant steps in the flow shown in FIG. 7 , and will not be repeated here.

需要说明的是，上述图8流程中各步骤的时序仅为一种示例，比如，在其他一些场景中，步骤804和步骤805可以交换顺序，本申请实施例对此不作限制。It should be noted that, the sequence of each step in the above process of FIG. 8 is only an example. For example, in some other scenarios, the sequence of step 804 and step 805 may be interchanged, which is not limited in this embodiment of the present application.

基于图4所示的流程，图9示例性示出了一种具体场景下的信令交互流程。该流程与图7所示流程不同的是，目标IAB宿主CU从OAM网元获取该IAB节点在目标IAB宿主CU下时该IAB节点的候选小区标识。Based on the process shown in FIG. 4 , FIG. 9 exemplarily shows a signaling interaction process in a specific scenario. The difference between this process and the process shown in FIG. 7 is that the target IAB host CU obtains the candidate cell identifier of the IAB node when the IAB node is under the target IAB host CU from the OAM network element.

步骤901：IAB节点1的DU与目标IAB宿主CU之间进行F1连接建立过程。Step 901: An F1 connection establishment process is performed between the DU of the IAB node 1 and the target IAB host CU.

可选的，F1连接建立过程可包括如下步骤：IAB节点DU向目标IAB宿主CU发送F1建立请求(F1 setup request)消息，以请求与目标IAB宿主CU建立F1连接；目标IAB宿主CU向该IAB节点发送F1建立响应(F1 setup response)消息。Optionally, the F1 connection establishment process may include the following steps: the IAB node DU sends an F1 setup request (F1 setup request) message to the target IAB host CU to request to establish an F1 connection with the target IAB host CU; the target IAB host CU sends the IAB to the The node sends an F1 setup response (F1 setup response) message.

步骤902：目标LAB宿主CU从OAM网元获取第一候选小区ID。Step 902: The target LAB host CU obtains the ID of the first candidate cell from the OAM network element.

步骤903：IAB节点1进行MT重配置过程。通过该过程，目标IAB宿主CU通过与源IAB宿主CU间的接口，将第一候选小区标识发送给目标IAB宿主CU。Step 903: The IAB node 1 performs the MT reconfiguration process. Through this process, the target IAB host CU sends the first candidate cell identifier to the target IAB host CU through the interface with the source IAB host CU.

步骤904：源IAB宿主CU向IAB节点2发送RRC重配置消息，其中携带第二候选小区ID。Step 904: The source IAB host CU sends an RRC reconfiguration message to the IAB node 2, which carries the second candidate cell ID.

步骤905：源IAB宿主CU向UE发送RRC重配置消息，其中携带第二候选小区ID。Step 905: The source IAB donor CU sends an RRC reconfiguration message to the UE, which carries the second candidate cell ID.

步骤906：IAB节点2接收到RRC重配置消息后，进行候选小区配置，对候选小区的信号质量进行测量，并当候选小区的信号质量满足切换条件时，进行小区切换。Step 906: After receiving the RRC reconfiguration message, the IAB node 2 performs candidate cell configuration, measures the signal quality of the candidate cell, and performs cell handover when the signal quality of the candidate cell satisfies the handover condition.

步骤907：UE接收到RRC重配置消息后，进行候选小区配置，对候选小区的信号质量进行测量，并当候选小区的信号质量满足切换条件时，进行小区切换。Step 907: After receiving the RRC reconfiguration message, the UE performs candidate cell configuration, measures the signal quality of the candidate cell, and performs cell handover when the signal quality of the candidate cell satisfies the handover condition.

图9所示的流程中，步骤903至步骤907的具体实现过程，与图7所示流程中的相关步骤相同，在此不再重复。In the flow shown in FIG. 9 , the specific implementation process of steps 903 to 907 is the same as the relevant steps in the flow shown in FIG. 7 , and will not be repeated here.

需要说明的是，上述图9流程中各步骤的时序仅为一种示例，本申请实施例对此不作限制。It should be noted that, the sequence of each step in the above process of FIG. 9 is only an example, which is not limited in this embodiment of the present application.

基于相同的技术构思，本申请实施例还提供了一种IAB宿主CU设备，该IAB宿主CU设备可实现前述实施例中IAB宿主CU的功能。Based on the same technical concept, an embodiment of the present application further provides an IAB host CU device, and the IAB host CU device can implement the functions of the IAB host CU in the foregoing embodiments.

参见图10，为本申请实施例提供的IAB宿主CU设备的结构示意图，如图所示，该IAB宿主CU可包括：接收单元1001、处理单元1003和发送单元1003。Referring to FIG. 10 , which is a schematic structural diagram of an IAB host CU device provided by an embodiment of the present application, as shown in the figure, the IAB host CU may include: a receiving unit 1001 , a processing unit 1003 , and a sending unit 1003 .

当该IAB宿主CU作为源IAB宿主CU时：When this IAB host CU acts as the source IAB host CU:

接收单元1001，用于接收来自于IAB节点的第一候选小区标识或来自于所述IAB节点的目标IAB宿主CU的第一候选小区标识；所述第一候选小区标识是为向所述目标IAB宿主CU迁移的所述IAB节点分配的，所述第一候选小区标识包括所述IAB节点的子节点和/或所述IAB节点连接的终端的候选小区标识；A receiving unit 1001 is configured to receive a first candidate cell identifier from an IAB node or a first candidate cell identifier from a target IAB host CU of the IAB node; the first candidate cell identifier is for sending to the target IAB Assigned by the IAB node to which the host CU migrates, the first candidate cell identifier includes a candidate cell identifier of a child node of the IAB node and/or a terminal connected to the IAB node;

发送单元1003，用于将第二候选小区标识发送给所述IAB节点的子节点和/或该IAB子节点连接的终端，所述第二候选小区标识包括所述第一候选小区标识中的至少一个。A sending unit 1003 is configured to send a second candidate cell identifier to a sub-node of the IAB node and/or a terminal connected to the IAB sub-node, where the second candidate cell identifier includes at least one of the first candidate cell identifiers. One.

可选的，接收单元1001具体用于：接收所述IAB节点发送的通知消息，所述通知消息携带所述第一候选小区标识，其中，所述通知消息为F1AP消息。Optionally, the receiving unit 1001 is specifically configured to: receive a notification message sent by the IAB node, where the notification message carries the identifier of the first candidate cell, where the notification message is an F1AP message.

可选的，发送单元1003还用于：向所述目标IAB宿主CU发送切换请求消息；接收单元1001还用于：接收所述目标IAB宿主CU发送的切换请求确认消息，所述切换请求确认消息封装有无线资源控制RRC重配置消息；发送单元1003进一步用于：向所述IAB节点发送所述RRC重配置消息。Optionally, the sending unit 1003 is further configured to: send a handover request message to the target IAB host CU; the receiving unit 1001 is further configured to: receive a handover request confirmation message sent by the target IAB host CU, the handover request confirmation message The radio resource control RRC reconfiguration message is encapsulated; the sending unit 1003 is further configured to: send the RRC reconfiguration message to the IAB node.

可选的，发送单元1003具体用于：向所述目标IAB宿主CU发送切换请求消息；接收单元1001具体用于：接收所述目标IAB宿主CU的切换请求确认消息，所述切换请求确认消息封装有RRC重配置消息以及所述第一候选小区标识；发送单元1003进一步用于：向所述IAB节点发送所述RRC重配置消息。Optionally, the sending unit 1003 is specifically configured to: send a handover request message to the target IAB host CU; the receiving unit 1001 is specifically configured to: receive a handover request confirmation message of the target IAB host CU, and the handover request confirmation message is encapsulated There is an RRC reconfiguration message and the identifier of the first candidate cell; the sending unit 1003 is further configured to: send the RRC reconfiguration message to the IAB node.

可选的，处理单元1002用于：接收所述目标IAB宿主CU的切换请求确认消息之后，确定所述IAB节点的第三小区标识与所述第一候选小区标识间的映射关系，所述第三小区标识为所述IAB节点在所述源IAB宿主CU下时所述IAB节点的小区标识；发送单元1003具体用于：根据所述映射关系，将所述第一候选小区标识中的至少一个发送给所述IAB节点的子节点和/或该IAB子节点连接的终端。Optionally, the processing unit 1002 is configured to: after receiving the handover request confirmation message of the target IAB host CU, determine the mapping relationship between the third cell identifier of the IAB node and the first candidate cell identifier, the first candidate cell identifier. The third cell identifier is the cell identifier of the IAB node when the IAB node is under the source IAB host CU; the sending unit 1003 is specifically configured to: according to the mapping relationship, convert at least one of the first candidate cell identifiers Sent to the child node of the IAB node and/or the terminal connected to the IAB child node.

可选的，所述第一候选小区标识来自于所述IAB节点时，所述第一候选小区标识是所述IAB节点从所述目标IAB宿主CU获得的；或者，所述第一候选小区标识来自于所述IAB节点时，所述第一候选小区标识是所述IAB节点从操作维护和管理OAM网元获得的。Optionally, when the first candidate cell identifier is from the IAB node, the first candidate cell identifier is obtained by the IAB node from the target IAB host CU; or, the first candidate cell identifier When it comes from the IAB node, the first candidate cell identifier is obtained by the IAB node from the operation, maintenance and management OAM network element.

可选的，所述第一候选小区标识是所述IAB节点与所述目标IAB宿主CU建立F1连接时，根据来自于所述目标IAB宿主CU的F1建立响应消息获取的，所述F1建立响应消息携带所述目标IAB宿主CU为所述IAB节点分配的所述第一候选小区标识。Optionally, the first candidate cell identifier is obtained according to the F1 establishment response message from the target IAB host CU when the IAB node establishes the F1 connection with the target IAB host CU, and the F1 establishment response The message carries the identifier of the first candidate cell allocated by the target IAB host CU to the IAB node.

可选的，接收单元1001还用于：接收来自于所述IAB节点的所述第一候选小区标识与第三小区标识之间的映射关系，所述第三小区标识为所述IAB节点在所述源IAB宿主CU下时所述IAB节点的小区标识；或者，所述源IAB宿主CU确定所述映射关系；发送单元1003具体用于：根据所述映射关系，将所述第一候选小区标识中的至少一个发送给所述IAB节点的子节点和/或该IAB子节点连接的终端。Optionally, the receiving unit 1001 is further configured to: receive the mapping relationship between the first candidate cell identifier and the third cell identifier from the IAB node, where the third cell identifier is the location where the IAB node is located. The cell identifier of the IAB node when the source IAB host CU is under; or, the source IAB host CU determines the mapping relationship; the sending unit 1003 is specifically configured to: according to the mapping relationship, the first candidate cell identifier At least one of them is sent to a child node of the IAB node and/or a terminal connected to the IAB child node.

可选的，发送单元1003具体用于：向所述子节点和/或该IAB子节点连接的终端发送RRC重配置消息，所述RRC重配置消息携带所述第二候选小区标识。Optionally, the sending unit 1003 is specifically configured to: send an RRC reconfiguration message to the sub-node and/or the terminal connected to the IAB sub-node, where the RRC reconfiguration message carries the identifier of the second candidate cell.

可选的，发送单元1003还用于：将切换相关的配置信息发送给所述子节点和/或该IAB子节点连接的终端。Optionally, the sending unit 1003 is further configured to: send the handover-related configuration information to the sub-node and/or the terminal connected to the IAB sub-node.

当该IAB宿主CU作为目标IAB宿主CU时：When this IAB host CU is the target IAB host CU:

接收单元1001，用于获得第一候选小区标识，其中第一候选小区标识的含义与前述实施例相同；A receiving unit 1001, configured to obtain a first candidate cell identifier, where the meaning of the first candidate cell identifier is the same as in the foregoing embodiment;

发送单元1003，用于将所述第一候选小区标识发送给所述IAB节点的源IAB宿主CU，可以使得所述源IAB宿主CU向所述IAB节点的子节点和/或该IAB子节点连接的终端发送第二候选小区标识，所述第二候选小区标识包括所述第一候选小区标识中的至少一个。A sending unit 1003, configured to send the first candidate cell identifier to the source IAB host CU of the IAB node, so that the source IAB host CU can be connected to a child node of the IAB node and/or the IAB child node The terminal of the device sends a second candidate cell identifier, where the second candidate cell identifier includes at least one of the first candidate cell identifiers.

可选的，接收单元1001具体用于：接收来自于所述IAB节点的F1建立请求消息；处理单元1002用于：根据所述F1建立请求消息为所述IAB节点分配所述第一候选小区标识；发送单元1003具体用于：向所述IAB节点发送F1建立响应消息，所述F1建立响应消息携带所述第一候选小区标识。Optionally, the receiving unit 1001 is specifically configured to: receive an F1 establishment request message from the IAB node; the processing unit 1002 is configured to: allocate the first candidate cell identifier to the IAB node according to the F1 establishment request message ; The sending unit 1003 is specifically configured to: send an F1 establishment response message to the IAB node, where the F1 establishment response message carries the identifier of the first candidate cell.

可选的，接收单元1001具体用于：从OAM网元获得所述第一候选小区标识。Optionally, the receiving unit 1001 is specifically configured to: obtain the identifier of the first candidate cell from the OAM network element.

可选的，接收单元1001具体用于：接收来自于所述源IAB宿主CU的切换请求消息；发送单元1003具体用于：向所述源IAB宿主CU发送切换请求确认消息，所述切换请求确认消息携带所述第一候选小区标识。Optionally, the receiving unit 1001 is specifically configured to: receive a handover request message from the source IAB host CU; the sending unit 1003 is specifically configured to: send a handover request confirmation message to the source IAB host CU, the handover request confirmation The message carries the identifier of the first candidate cell.

在此需要说明的是，本发明实施例提供的上述IAB宿主CU设备，能够实现上述方法实施例中IAB宿主CU所实现的所有或部分方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。It should be noted here that the above-mentioned IAB host CU device provided in the embodiments of the present invention can implement all or part of the method steps implemented by the IAB host CU in the above method embodiments, and can achieve the same technical effect, which is not repeated here. The same parts and beneficial effects in this embodiment as those in the method embodiment will be described in detail.

基于相同的技术构思，本申请实施例还提供了一种IAB节点设备，该IAB节点设备可实现前述实施例中IAB节点的功能。Based on the same technical concept, an embodiment of the present application further provides an IAB node device, and the IAB node device can implement the functions of the IAB node in the foregoing embodiments.

参见图11，为本申请实施例提供的IAB节点设备的结构示意图，如图所示，该IAB节点设备可包括：接收单元1101、处理单元1102、发送单元1103。Referring to FIG. 11 , which is a schematic structural diagram of an IAB node device provided by an embodiment of the present application, as shown in the figure, the IAB node device may include: a receiving unit 1101 , a processing unit 1102 , and a sending unit 1103 .

接收单元1101，用于获取第一候选小区标识，其中第一候选小区标识的含义与前述实施例相同；a receiving unit 1101, configured to acquire a first candidate cell identifier, where the meaning of the first candidate cell identifier is the same as in the foregoing embodiment;

可选的，发送单元1103具体用于：向所述IAB节点的目标IAB宿主CU发送F1建立请求消息；接收单元1101具体用于：接收所述目标IAB宿主CU发送的F1建立响应消息，所述F1建立响应消息携带所述目标IAB宿主CU为所述IAB节点分配的所述第一候选小区标识。Optionally, the sending unit 1103 is specifically configured to: send an F1 establishment request message to the target IAB host CU of the IAB node; the receiving unit 1101 is specifically configured to: receive an F1 establishment response message sent by the target IAB host CU, the The F1 setup response message carries the first candidate cell identifier allocated by the target IAB host CU to the IAB node.

可选的，接收单元1101具体用于：从OAM网元获取所述第一候选小区标识。Optionally, the receiving unit 1101 is specifically configured to: acquire the identifier of the first candidate cell from the OAM network element.

可选的，发送单元1103具体用于：向所述源IAB宿主发送的通知消息，所述通知消息携带所述第一候选小区标识，其中，所述通知消息为F1应用协议F1AP消息。Optionally, the sending unit 1103 is specifically configured to: send a notification message to the source IAB host, where the notification message carries the identifier of the first candidate cell, where the notification message is an F1 application protocol F1AP message.

在此需要说明的是，本发明实施例提供的上述IAB节点设备，能够实现上述方法实施例中IAB节点所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。It should be noted here that the above-mentioned IAB node device provided in the embodiment of the present invention can implement all the method steps implemented by the IAB node in the above-mentioned method embodiments, and can achieve the same technical effect. The same parts and beneficial effects as those in the method embodiment will be described in detail.

基于相同的技术构思，本申请实施例还提供了一种通信装置。该通信装置可以是IAB宿主或IAB宿主CU。Based on the same technical idea, an embodiment of the present application also provides a communication device. The communication device may be an IAB host or an IAB host CU.

参见图12，为本申请实施例提供的通信装置的结构示意图。如图所示，该通信装置可包括：处理器1201、存储器1202、收发机1203以及总线接口1204。Referring to FIG. 12 , it is a schematic structural diagram of a communication apparatus according to an embodiment of the present application. As shown in the figure, the communication device may include: a processor 1201 , a memory 1202 , a transceiver 1203 and a bus interface 1204 .

处理器1201负责管理总线架构和通常的处理，存储器1202可以存储处理器1201在执行操作时所使用的数据。收发机1203用于在处理器1201的控制下接收和发送数据。The processor 1201 is responsible for managing the bus architecture and general processing, and the memory 1202 may store data used by the processor 1201 in performing operations. The transceiver 1203 is used to receive and transmit data under the control of the processor 1201 .

总线架构可以包括任意数量的互联的总线和桥，具体由处理器1201代表的一个或多个处理器和存储器1202代表的存储器的各种电路链接在一起。总线架构还可以将诸如***设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。处理器1201负责管理总线架构和通常的处理，存储器1202可以存储处理器1201在执行操作时所使用的数据。The bus architecture may include any number of interconnected buses and bridges, in particular one or more processors represented by processor 1201 and various circuits of memory represented by memory 1202 linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. The processor 1201 is responsible for managing the bus architecture and general processing, and the memory 1202 may store data used by the processor 1201 in performing operations.

本申请实施例揭示的流程，可以应用于处理器1201中，或者由处理器1201实现。在实现过程中，信号处理流程的各步骤可以通过处理器1201中的硬件的集成逻辑电路或者软件形式的指令完成。处理器1201可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器1202，处理器1201读取存储器1202中的信息，结合其硬件完成信号处理流程的步骤。The processes disclosed in the embodiments of the present application may be applied to the processor 1201 or implemented by the processor 1201 . In the implementation process, each step of the signal processing flow can be completed by an integrated logic circuit of hardware in the processor 1201 or instructions in the form of software. The processor 1201 may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the embodiments of the present application. The disclosed methods, steps, and logical block diagrams of . A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory 1202, and the processor 1201 reads the information in the memory 1202, and completes the steps of the signal processing flow in combination with its hardware.

具体地，处理器1201，用于读取存储器1202中的计算机指令并执行以下操作：Specifically, the processor 1201 is configured to read the computer instructions in the memory 1202 and perform the following operations:

接收来自于所述IAB节点的第一候选小区标识或来自于所述IAB节点的目标IAB宿主CU的第一候选小区标识，所述第一候选小区标识是为向所述目标IAB宿主CU迁移的所述IAB节点分配的，所述第一候选小区标识包括所述IAB节点的子节点和/或所述IAB节点连接的终端的候选小区标识；Receive a first candidate cell identity from the IAB node or a first candidate cell identity from a target IAB host CU of the IAB node, where the first candidate cell identity is for migration to the target IAB host CU Assigned by the IAB node, the first candidate cell identifier includes a candidate cell identifier of a child node of the IAB node and/or a terminal connected to the IAB node;

将第二候选小区标识发送给所述IAB节点的子节点和/或所述IAB节点连接的终端，所述第二候选小区标识包括所述第一候选小区标识中的至少一个。Sending a second candidate cell identifier to a child node of the IAB node and/or a terminal connected to the IAB node, where the second candidate cell identifier includes at least one of the first candidate cell identifiers.

可选的，在接收来自于所述IAB节点的第一候选小区标识时，所述处理器1201具体用于：Optionally, when receiving the first candidate cell identifier from the IAB node, the processor 1201 is specifically configured to:

接收所述IAB节点发送的通知消息，所述通知消息携带所述第一候选小区标识，其中，所述通知消息为F1应用协议F1AP消息。Receive a notification message sent by the IAB node, where the notification message carries the identifier of the first candidate cell, where the notification message is an F1 application protocol F1AP message.

可选的，所述处理器1201还用于：Optionally, the processor 1201 is further configured to:

向所述目标IAB宿主CU发送切换请求消息；sending a handover request message to the target IAB host CU;

接收所述目标IAB宿主CU发送的切换请求确认消息，所述切换请求确认消息封装有无线资源控制RRC重配置消息；receiving a handover request confirmation message sent by the target IAB host CU, where the handover request confirmation message is encapsulated with a radio resource control RRC reconfiguration message;

向所述IAB节点发送所述RRC重配置消息。The RRC reconfiguration message is sent to the IAB node.

可选的，在接收来自于所述IAB节点的目标IAB宿主CU的第一候选小区标识时，所述处理器1201具体用于：Optionally, when receiving the first candidate cell identifier of the target IAB host CU from the IAB node, the processor 1201 is specifically configured to:

接收所述目标IAB宿主CU的切换请求确认消息，所述切换请求确认消息封装有RRC重配置消息以及所述第一候选小区标识；receiving a handover request confirmation message of the target IAB host CU, where the handover request confirmation message is encapsulated with an RRC reconfiguration message and the first candidate cell identifier;

可选的，所述接收所述目标IAB宿主CU的切换请求确认消息之后，所述处理器1201还用于：Optionally, after receiving the handover request confirmation message of the target IAB host CU, the processor 1201 is further configured to:

确定所述IAB节点的第三小区标识与所述第一候选小区标识间的映射关系，所述第三小区标识为所述IAB节点在所述源IAB宿主CU下时所述IAB节点的小区标识；Determine the mapping relationship between the third cell identifier of the IAB node and the first candidate cell identifier, where the third cell identifier is the cell identifier of the IAB node when the IAB node is under the source IAB host CU ;

在将第二候选小区标识发送给所述IAB节点的子节点和/或所述IAB节点连接的终端时，所述处理器1201具体用于：When sending the second candidate cell identifier to the child node of the IAB node and/or the terminal connected to the IAB node, the processor 1201 is specifically configured to:

根据所述映射关系，将所述第一候选小区标识中的至少一个发送给所述IAB节点的子节点和/或所述IAB节点连接的终端。According to the mapping relationship, at least one of the first candidate cell identities is sent to a child node of the IAB node and/or a terminal connected to the IAB node.

可选的，所述第一候选小区标识来自于所述IAB节点时，所述第一候选小区标识是所述IAB节点从所述目标IAB宿主CU获得的；或者，Optionally, when the first candidate cell identifier is from the IAB node, the first candidate cell identifier is obtained by the IAB node from the target IAB host CU; or,

所述第一候选小区标识来自于所述IAB节点时，所述第一候选小区标识是所述IAB节点从操作维护和管理OAM网元获得的。When the first candidate cell identifier is from the IAB node, the first candidate cell identifier is obtained by the IAB node from the operation, maintenance and management OAM network element.

可选的，所述第一候选小区标识来自于所述目标IAB宿主CU时，所述第一候选小区标识是所述目标IAB宿主CU根据来自于所述IAB节点的F1建立请求消息为所述IAB节点分配的；或者，Optionally, when the first candidate cell identifier is from the target IAB host CU, the first candidate cell identifier is the target IAB host CU according to the F1 establishment request message from the IAB node. assigned by the IAB node; or,

所述第一候选小区标识来自于所述目标IAB宿主CU时，所述第一候选小区标识是所述目标IAB宿主CU根据从OAM网元获得的。When the first candidate cell identifier comes from the target IAB donor CU, the first candidate cell identifier is obtained by the target IAB donor CU from the OAM network element.

接收来自于所述IAB节点的所述第一候选小区标识与第三小区标识之间的映射关系，所述第三小区标识为所述IAB节点在所述源IAB宿主CU下时所述IAB节点的小区标识；或者，所述源IAB宿主CU确定所述映射关系；Receive a mapping relationship between the first candidate cell identifier and a third cell identifier from the IAB node, where the third cell identifier is the IAB node when the IAB node is under the source IAB host CU or, the source IAB host CU determines the mapping relationship;

可选的，所述处理器1201具体用于：Optionally, the processor 1201 is specifically used for:

向所述子节点和/或所述IAB节点连接的终端发送RRC重配置消息，所述RRC重配置消息携带所述第二候选小区标识。Send an RRC reconfiguration message to the terminal connected to the sub-node and/or the IAB node, where the RRC reconfiguration message carries the identifier of the second candidate cell.

将切换相关的配置信息发送给所述子节点和/或所述IAB节点连接的终端。The handover-related configuration information is sent to the sub-node and/or the terminal connected to the IAB node.

参见图13，为本申请实施例提供的通信装置的结构示意图。如图所示，该通信装置可包括：处理器1301、存储器1302、收发机1303以及总线接口1304。Referring to FIG. 13 , it is a schematic structural diagram of a communication apparatus according to an embodiment of the present application. As shown, the communication device may include: a processor 1301 , a memory 1302 , a transceiver 1303 and a bus interface 1304 .

处理器1301负责管理总线架构和通常的处理，存储器1302可以存储处理器1301在执行操作时所使用的数据。收发机1303用于在处理器1301的控制下接收和发送数据。The processor 1301 is responsible for managing the bus architecture and general processing, and the memory 1302 may store data used by the processor 1301 in performing operations. The transceiver 1303 is used to receive and transmit data under the control of the processor 1301 .

总线架构可以包括任意数量的互联的总线和桥，具体由处理器1301代表的一个或多个处理器和存储器1302代表的存储器的各种电路链接在一起。总线架构还可以将诸如***设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。处理器1301负责管理总线架构和通常的处理，存储器1302可以存储处理器1301在执行操作时所使用的数据。The bus architecture may include any number of interconnected buses and bridges, in particular one or more processors represented by processor 1301 and various circuits of memory represented by memory 1302 linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. The processor 1301 is responsible for managing the bus architecture and general processing, and the memory 1302 may store data used by the processor 1301 in performing operations.

本申请实施例揭示的流程，可以应用于处理器1301中，或者由处理器1301实现。在实现过程中，信号处理流程的各步骤可以通过处理器1301中的硬件的集成逻辑电路或者软件形式的指令完成。处理器1301可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器1302，处理器1301读取存储器1302中的信息，结合其硬件完成信号处理流程的步骤。The processes disclosed in the embodiments of the present application may be applied to the processor 1301 or implemented by the processor 1301 . In the implementation process, each step of the signal processing flow can be completed by an integrated logic circuit of hardware in the processor 1301 or an instruction in the form of software. The processor 1301 may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the embodiments of the present application. The disclosed methods, steps, and logical block diagrams of . A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory 1302, and the processor 1301 reads the information in the memory 1302, and completes the steps of the signal processing flow in combination with its hardware.

具体地，处理器1301，用于读取存储器1302中的计算机指令并执行以下操作：Specifically, the processor 1301 is configured to read the computer instructions in the memory 1302 and perform the following operations:

获得第一候选小区标识，所述第一候选小区标识是为向目标IAB宿主CU迁移的IAB节点分配的，所述第一候选小区标识包括所述IAB节点的子节点和/或所述IAB节点连接的终端的候选小区标识；Obtain a first candidate cell identifier, where the first candidate cell identifier is allocated for the IAB node migrating to the target IAB host CU, and the first candidate cell identifier includes a child node of the IAB node and/or the IAB node the candidate cell identifier of the connected terminal;

将所述第一候选小区标识发送给所述IAB节点的源IAB宿主CU。sending the first candidate cell identifier to the source IAB host CU of the IAB node.

可选的，所述处理器1301具体用于：Optionally, the processor 1301 is specifically used for:

接收来自于所述IAB节点的F1建立请求消息；receiving an F1 establishment request message from the IAB node;

根据所述F1建立请求消息为所述IAB节点分配所述第一候选小区标识，并向所述IAB节点发送F1建立响应消息，所述F1建立响应消息携带所述第一候选小区标识。The first candidate cell identifier is allocated to the IAB node according to the F1 setup request message, and an F1 setup response message is sent to the IAB node, where the F1 setup response message carries the first candidate cell identifier.

从维护操作和管理OAM网元获得所述第一候选小区标识。The first candidate cell identity is obtained from the maintenance operation and management OAM network element.

接收来自于所述源IAB宿主CU的切换请求消息；receiving a handover request message from the source IAB host CU;

向所述源IAB宿主CU发送切换请求确认消息，所述切换请求确认消息携带所述第一候选小区标识。Send a handover request confirmation message to the source IAB host CU, where the handover request confirmation message carries the first candidate cell identifier.

在此需要说明的是，本发明实施例提供的上述两种通信装置，能够实现上述方法实施例中IAB宿主CU所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。It should be noted here that the above two communication apparatuses provided in the embodiments of the present invention can implement all the method steps implemented by the IAB host CU in the above method embodiments, and can achieve the same technical effect, and this implementation will not be described here. In the example, the same parts and beneficial effects as the method embodiment will be described in detail.

基于相同的技术构思，本申请实施例还提供了一种通信装置。该通信装置可以是IAB节点。Based on the same technical idea, an embodiment of the present application also provides a communication device. The communication device may be an IAB node.

参见图14，为本申请实施例提供的通信装置的结构示意图。如图所示，该通信装置可包括：处理器1401、存储器1402、收发机1403以及总线接口1404。Referring to FIG. 14 , it is a schematic structural diagram of a communication apparatus according to an embodiment of the present application. As shown, the communication device may include: a processor 1401 , a memory 1402 , a transceiver 1403 and a bus interface 1404 .

处理器1401负责管理总线架构和通常的处理，存储器1402可以存储处理器1401在执行操作时所使用的数据。收发机1403用于在处理器1401的控制下接收和发送数据。The processor 1401 is responsible for managing the bus architecture and general processing, and the memory 1402 may store data used by the processor 1401 in performing operations. The transceiver 1403 is used to receive and transmit data under the control of the processor 1401 .

总线架构可以包括任意数量的互联的总线和桥，具体由处理器1401代表的一个或多个处理器和存储器1402代表的存储器的各种电路链接在一起。总线架构还可以将诸如***设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。处理器1401负责管理总线架构和通常的处理，存储器1402可以存储处理器1401在执行操作时所使用的数据。The bus architecture may include any number of interconnected buses and bridges, in particular one or more processors represented by processor 1401 and various circuits of memory represented by memory 1402 linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. The processor 1401 is responsible for managing the bus architecture and general processing, and the memory 1402 may store data used by the processor 1401 in performing operations.

本申请实施例揭示的流程，可以应用于处理器1401中，或者由处理器1401实现。在实现过程中，信号处理流程的各步骤可以通过处理器1401中的硬件的集成逻辑电路或者软件形式的指令完成。处理器1401可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器1402，处理器1401读取存储器1402中的信息，结合其硬件完成信号处理流程的步骤。The processes disclosed in the embodiments of the present application may be applied to the processor 1401 or implemented by the processor 1401 . In the implementation process, each step of the signal processing flow can be completed by an integrated logic circuit of hardware in the processor 1401 or an instruction in the form of software. The processor 1401 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the embodiments of the present application. The disclosed methods, steps, and logical block diagrams of . A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory 1402, and the processor 1401 reads the information in the memory 1402, and completes the steps of the signal processing flow in combination with its hardware.

具体地，处理器1401，用于读取存储器1402中的计算机指令并执行以下操作：Specifically, the processor 1401 is configured to read the computer instructions in the memory 1402 and perform the following operations:

获取第一候选小区标识，所述第一候选小区标识是为向目标IAB宿主CU迁移的IAB节点分配的，所述第一候选小区标识包括所述IAB节点的子节点和/或所述IAB节点连接的终端的候选小区标识；Obtain a first candidate cell identifier, where the first candidate cell identifier is allocated for the IAB node migrating to the target IAB host CU, and the first candidate cell identifier includes a child node of the IAB node and/or the IAB node the candidate cell identifier of the connected terminal;

可选的，所述处理器1401具体用于：Optionally, the processor 1401 is specifically used for:

向所述IAB节点的目标IAB宿主CU发送F1建立请求消息；sending an F1 establishment request message to the target IAB host CU of the IAB node;

接收所述目标IAB宿主CU发送的F1建立响应消息，所述F1建立响应消息携带所述目标IAB宿主CU为所述IAB节点分配的所述第一候选小区标识。An F1 establishment response message sent by the target IAB host CU is received, where the F1 establishment response message carries the first candidate cell identifier allocated by the target IAB host CU for the IAB node.

从操作维护和管理OAM网元获取所述第一候选小区标识。The first candidate cell identifier is obtained from the operation, maintenance and management OAM network element.

向所述源IAB宿主发送的通知消息，所述通知消息携带所述第一候选小区标识，其中，所述通知消息为F1应用协议F1AP消息。A notification message sent to the source IAB host, where the notification message carries the identifier of the first candidate cell, where the notification message is an F1 application protocol F1AP message.

在此需要说明的是，本发明实施例提供的上述通信装置，能够实现上述方法实施例中IAB节点所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。It should be noted here that the above-mentioned communication device provided in the embodiment of the present invention can implement all the method steps implemented by the IAB node in the above-mentioned method embodiment, and can achieve the same technical effect. The same parts and beneficial effects of the method embodiments will be described in detail.

本申请实施例还提供了一种计算机可读存储介质，计算机可读存储介质存储有计算机可执行指令，计算机可执行指令用于使计算机执行上述实施例中IAB宿主CU所执行的方法。Embodiments of the present application further provide a computer-readable storage medium, where the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to cause the computer to execute the method executed by the IAB host CU in the foregoing embodiments.

本申请实施例还提供了一种计算机可读存储介质，计算机可读存储介质存储有计算机可执行指令，计算机可执行指令用于使计算机执行上述实施例中IAB节点所执行的方法。Embodiments of the present application further provide a computer-readable storage medium, where the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to cause the computer to execute the method executed by the IAB node in the foregoing embodiments.

本领域内的技术人员应明白，本申请的实施例可提供为方法、***、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。As will be appreciated by those skilled in the art, the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

本申请是参照根据本申请的方法、设备(***)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the present application. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

一种信息传输方法，其特征在于，包括：An information transmission method, comprising:

接入回传一体化IAB节点的源IAB宿主集中式单元CU接收来自于所述IAB节点的第一候选小区标识或来自于所述IAB节点的目标IAB宿主CU的第一候选小区标识；所述第一候选小区标识是为向所述目标IAB宿主CU迁移的所述IAB节点分配的，所述第一候选小区标识包括所述IAB节点的子节点和/或所述IAB节点连接的终端的候选小区标识；The source IAB host centralized unit CU accessing the backhaul integrated IAB node receives the first candidate cell identity from the IAB node or the first candidate cell identity from the target IAB host CU of the IAB node; the The first candidate cell identifier is allocated for the IAB node migrating to the target IAB host CU, and the first candidate cell identifier includes a candidate of a child node of the IAB node and/or a terminal connected to the IAB node cell identification;

所述源IAB宿主CU将第二候选小区标识发送给所述IAB节点的子节点和/或所述IAB节点连接的终端，所述第二候选小区标识包括所述第一候选小区标识中的至少一个。The source IAB host CU sends a second candidate cell identifier to a child node of the IAB node and/or a terminal connected to the IAB node, where the second candidate cell identifier includes at least one of the first candidate cell identifiers. One.
如权利要求1所述的方法，其特征在于，所述IAB节点的源IAB宿主CU接收来自于所述IAB节点的第一候选小区标识，包括：The method of claim 1, wherein the source IAB host CU of the IAB node receives the first candidate cell identifier from the IAB node, comprising:

所述源IAB宿主接收所述IAB节点发送的通知消息，所述通知消息携带所述第一候选小区标识，其中，所述通知消息为F1应用协议F1AP消息。The source IAB host receives a notification message sent by the IAB node, where the notification message carries the identifier of the first candidate cell, where the notification message is an F1 application protocol F1AP message.
如权利要求2所述的方法，其特征在于，所述通知消息还携带所述第一候选小区标识与第三小区标识之间的映射关系，所述第三小区标识为所述IAB节点在所述源IAB宿主CU下时所述IAB节点的小区标识。The method according to claim 2, wherein the notification message further carries a mapping relationship between the first candidate cell identifier and a third cell identifier, and the third cell identifier is the location where the IAB node is located. The cell identifier of the IAB node when the source IAB host CU is under.
如权利要求2所述的方法，其特征在于，所述方法还包括：The method of claim 2, wherein the method further comprises:

所述源IAB宿主CU向所述目标IAB宿主CU发送切换请求消息；The source IAB host CU sends a handover request message to the target IAB host CU;

所述源IAB宿主CU接收所述目标IAB宿主CU发送的切换请求确认消息，所述切换请求确认消息封装有无线资源控制RRC重配置消息；The source IAB host CU receives a handover request confirmation message sent by the target IAB host CU, where the handover request confirmation message is encapsulated with a radio resource control RRC reconfiguration message;

所述源IAB宿主CU向所述IAB节点发送所述RRC重配置消息。The source IAB host CU sends the RRC reconfiguration message to the IAB node.
如权利要求1所述的方法，其特征在于，所述IAB节点的源IAB宿主CU接收来自于所述IAB节点的目标IAB宿主CU的第一候选小区标识，包括：The method of claim 1, wherein the source IAB host CU of the IAB node receives the first candidate cell identifier of the target IAB host CU from the IAB node, comprising:

所述源IAB宿主CU向所述目标IAB宿主CU发送切换请求消息；The source IAB host CU sends a handover request message to the target IAB host CU;

所述源IAB宿主CU接收所述目标IAB宿主CU的切换请求确认消息，所述切换请求确认消息封装有RRC重配置消息以及所述第一候选小区标识；The source IAB host CU receives a handover request confirmation message of the target IAB host CU, where the handover request confirmation message is encapsulated with an RRC reconfiguration message and the first candidate cell identifier;

所述源IAB宿主CU向所述IAB节点发送所述RRC重配置消息。The source IAB host CU sends the RRC reconfiguration message to the IAB node.
如权利要求5所述的方法，其特征在于，所述源IAB宿主CU接收所述目标IAB宿主CU的切换请求确认消息之后，还包括：The method according to claim 5, wherein after the source IAB host CU receives the handover request confirmation message of the target IAB host CU, the method further comprises:

所述源IAB宿主CU确定所述IAB节点的第三小区标识与所述第一候选小区标识间的映射关系，所述第三小区标识为所述IAB节点在所述源IAB宿主CU下时所述IAB节点的小区标识；The source IAB host CU determines the mapping relationship between the third cell ID of the IAB node and the first candidate cell ID, where the third cell ID is the ID of the IAB node when it is under the source IAB host CU. the cell identity of the IAB node;

所述源IAB宿主CU将第二候选小区标识发送给所述IAB节点的子节点和/或所述IAB节点连接的终端，包括：The source IAB donor CU sends the second candidate cell identifier to the child node of the IAB node and/or the terminal connected to the IAB node, including:

所述源IAB宿主CU根据所述映射关系，将所述第一候选小区标识中的至少一个发送给所述IAB节点的子节点和/或所述IAB节点连接的终端。The source IAB host CU sends at least one of the first candidate cell identities to a child node of the IAB node and/or a terminal connected to the IAB node according to the mapping relationship.
如权利要求1-3任一项所述的方法，其特征在于，所述第一候选小区标识来自于所述IAB节点时，所述第一候选小区标识是所述IAB节点从所述目标IAB宿主CU获得的；或者，The method according to any one of claims 1-3, wherein when the first candidate cell identifier is from the IAB node, the first candidate cell identifier is the IAB node from the target IAB obtained by the host CU; or,

所述第一候选小区标识来自于所述IAB节点时，所述第一候选小区标识是所述IAB节点从操作维护和管理OAM网元获得的。When the first candidate cell identifier is from the IAB node, the first candidate cell identifier is obtained by the IAB node from the operation, maintenance and management OAM network element.
如权利要求7所述的方法，其特征在于，所述第一候选小区标识是所述IAB节点与所述目标IAB宿主CU建立F1连接时，根据来自于所述目标IAB宿主CU的F1建立响应消息获取的，所述F1建立响应消息携带所述目标IAB宿主CU为所述IAB节点分配的所述第一候选小区标识。The method according to claim 7, wherein the first candidate cell identifier is when the IAB node establishes an F1 connection with the target IAB host CU, according to an F1 establishment response from the target IAB host CU The F1 setup response message carries the first candidate cell identifier allocated by the target IAB host CU for the IAB node.
如权利要求1、5、6任一项所述的方法，其特征在于，所述第一候选小区标识来自于所述目标IAB宿主CU时，所述第一候选小区标识是所述目标IAB宿主CU根据来自于所述IAB节点的F1建立请求消息为所述IAB节点分配的；或者，The method according to any one of claims 1, 5, and 6, wherein when the first candidate cell identifier is from the target IAB donor CU, the first candidate cell identifier is the target IAB donor The CU is allocated for the IAB node according to the F1 establishment request message from the IAB node; or,

所述第一候选小区标识来自于所述目标IAB宿主CU时，所述第一候选小区标识是所述目标IAB宿主CU根据从OAM网元获得的。When the first candidate cell identifier comes from the target IAB donor CU, the first candidate cell identifier is obtained by the target IAB donor CU from the OAM network element.
如权利要求1所述的方法，其特征在于，所述方法还包括：The method of claim 1, wherein the method further comprises:

所述源IAB宿主CU接收来自于所述IAB节点的所述第一候选小区标识与第三小区标识之间的映射关系，所述第三小区标识为所述IAB节点在所述源IAB宿主CU下时所述IAB节点的小区标识；或者，所述源IAB宿主CU确定所述映射关系；The source IAB host CU receives the mapping relationship between the first candidate cell identifier and the third cell identifier from the IAB node, where the third cell identifier is the source IAB host CU of the IAB node Next, the cell identifier of the IAB node; or, the source IAB host CU determines the mapping relationship;

所述源IAB宿主CU将第二候选小区标识发送给所述IAB节点的子节点和/或所述IAB节点连接的终端，包括：The source IAB donor CU sends the second candidate cell identifier to the child node of the IAB node and/or the terminal connected to the IAB node, including:

所述源IAB宿主CU根据所述映射关系，将所述第一候选小区标识中的至少一个发送给所述IAB节点的子节点和/或所述IAB节点连接的终端。The source IAB host CU sends at least one of the first candidate cell identifiers to a child node of the IAB node and/or a terminal connected to the IAB node according to the mapping relationship.
如权利要求1所述的方法，其特征在于，所述源IAB宿主CU将第二候选小区标识发送给所述IAB节点的子节点和/或所述IAB节点连接的终端，包括：The method according to claim 1, wherein the source IAB host CU sends the second candidate cell identifier to a child node of the IAB node and/or a terminal connected to the IAB node, comprising:

所述源IAB宿主CU向所述子节点和/或所述IAB节点连接的终端发送RRC重配置消息，所述RRC重配置消息携带所述第二候选小区标识。The source IAB donor CU sends an RRC reconfiguration message to the sub-node and/or the terminal connected to the IAB node, where the RRC reconfiguration message carries the identifier of the second candidate cell.
如权利要求1所述的方法，其特征在于，所述方法还包括：The method of claim 1, wherein the method further comprises:

所述源IAB宿主CU将切换相关的配置信息发送给所述子节点和/或所述IAB节点连接的终端。The source IAB host CU sends the handover-related configuration information to the child node and/or the terminal connected to the IAB node.
一种信息传输方法，其特征在于，包括：An information transmission method, comprising:

接入回传一体化IAB节点的目标IAB宿主集中式单元CU获得第一候选小区标识；所述第一候选小区标识是为向所述目标IAB宿主CU迁移的所述IAB节点分配的，所述第一候选小区标识包括所述IAB节点的子节点和/或所述IAB节点连接的终端的候选小区标识；The target IAB host centralized unit CU accessing the integrated backhaul IAB node obtains a first candidate cell identifier; the first candidate cell identifier is allocated for the IAB node migrating to the target IAB host CU, and the The first candidate cell identifier includes the candidate cell identifier of the child node of the IAB node and/or the terminal connected to the IAB node;

所述目标IAB宿主CU将所述第一候选小区标识发送给所述IAB节点的源IAB宿主CU。The target IAB host CU sends the first candidate cell identifier to the source IAB host CU of the IAB node.
如权利要求13所述的方法，其特征在于，所述IAB节点的目标IAB宿主CU获得第一候选小区标识，包括：The method according to claim 13, wherein the target IAB host CU of the IAB node obtains the first candidate cell identifier, comprising:

所述目标IAB宿主CU接收来自于所述IAB节点的F1建立请求消息；The target IAB host CU receives the F1 establishment request message from the IAB node;

所述目标IAB宿主CU根据所述F1建立请求消息为所述IAB节点分配所述第一候选小区标识，并向所述IAB节点发送F1建立响应消息，所述F1建立响应消息携带所述第一候选小区标识。The target IAB host CU allocates the first candidate cell identifier to the IAB node according to the F1 setup request message, and sends an F1 setup response message to the IAB node, where the F1 setup response message carries the first Candidate cell ID.
如权利要求13所述的方法，其特征在于，所述IAB节点的目标IAB宿主CU获得第一候选小区标识，包括：The method according to claim 13, wherein the target IAB host CU of the IAB node obtains the first candidate cell identifier, comprising:

所述目标IAB宿主CU从维护操作和管理OAM网元获得所述第一候选小区标识。The target IAB host CU obtains the first candidate cell identity from the maintenance operation and management OAM network element.
如权利要求13所述的方法，其特征在于，所述目标IAB宿主CU将所述第一候选小区标识发送给所述IAB节点的源IAB宿主CU，包括：The method of claim 13, wherein the target IAB host CU sends the first candidate cell identifier to the source IAB host CU of the IAB node, comprising:

所述目标IAB宿主CU接收来自于所述源IAB宿主CU的切换请求消息；The target IAB host CU receives a handover request message from the source IAB host CU;

所述目标IAB宿主CU向所述源IAB宿主CU发送切换请求确认消息，所述切换请求确认消息携带所述第一候选小区标识。The target IAB host CU sends a handover request confirmation message to the source IAB host CU, where the handover request confirmation message carries the first candidate cell identifier.
一种信息传输方法，其特征在于，包括：An information transmission method, comprising:

接入回传一体化IAB节点获取第一候选小区标识；所述第一候选小区标识是为向目标IAB宿主CU迁移的所述IAB节点分配的，所述第一候选小区标识包括所述IAB节点的子节点和/或所述IAB节点连接的终端的候选小区标识；The integrated IAB node for access and backhaul obtains a first candidate cell identifier; the first candidate cell identifier is allocated for the IAB node migrating to the target IAB host CU, and the first candidate cell identifier includes the IAB node The candidate cell identifier of the child node of the IAB node and/or the terminal connected to the IAB node;

所述IAB节点将所述第一候选小区标识发送给所述IAB节点的源IAB宿主CU。The IAB node sends the first candidate cell identifier to the source IAB host CU of the IAB node.
如权利要求17所述的方法，其特征在于，所述IAB节点获取第一候选小区标识，包括：The method of claim 17, wherein the IAB node obtains the first candidate cell identifier, comprising:

所述IAB节点向所述IAB节点的目标IAB宿主CU发送F1建立请求消息；The IAB node sends an F1 establishment request message to the target IAB host CU of the IAB node;

所述IAB节点接收所述目标IAB宿主CU发送的F1建立响应消息，所述F1建立响应消息携带所述目标IAB宿主CU为所述IAB节点分配的所述第一候选小区标识。The IAB node receives an F1 setup response message sent by the target IAB host CU, where the F1 setup response message carries the first candidate cell identifier allocated by the target IAB host CU to the IAB node.
如权利要求17所述的方法，其特征在于，所述IAB节点获取第一候选小区标识，包括：The method of claim 17, wherein the IAB node obtains the first candidate cell identifier, comprising:

所述IAB节点从操作维护和管理OAM网元获取所述第一候选小区标识。The IAB node obtains the first candidate cell identifier from the operation, maintenance and management OAM network element.
如权利要求17-19任一项所述的方法，其特征在于，所述IAB节点将所述第一候选小区标识发送给所述IAB节点的源IAB宿主CU，包括：The method according to any one of claims 17-19, wherein the IAB node sends the first candidate cell identifier to the source IAB host CU of the IAB node, comprising:

所述IAB节点向所述源IAB宿主发送的通知消息，所述通知消息携带所述第一候选小区标识，其中，所述通知消息为F1应用协议F1AP消息。A notification message sent by the IAB node to the source IAB host, where the notification message carries the identifier of the first candidate cell, where the notification message is an F1 application protocol F1AP message.
如权利要求20所述的方法，其特征在于，所述通知消息还携带所述第一候选小区标识与第三小区标识之间的映射关系，所述第三小区标识为所述IAB节点在所述源IAB宿主CU下时所述IAB节点的小区标识。The method of claim 20, wherein the notification message further carries a mapping relationship between the first candidate cell identifier and a third cell identifier, and the third cell identifier is the location where the IAB node is located. The cell identifier of the IAB node when the source IAB host CU is under.
一种接入回传一体化IAB宿主集中式单元CU设备，其特征在于，包括：An access and backhaul integrated IAB host centralized unit CU device, characterized in that it includes:

接收单元，用于接收来自于IAB节点的第一候选小区标识或来自于所述IAB节点的目标IAB宿主CU的第一候选小区标识；所述第一候选小区标识是为向所述目标IAB宿主CU迁移的所述IAB节点分配的，所述第一候选小区标识包括所述IAB节点的子节点和/或所述IAB节点连接的终端的候选小区标识；A receiving unit, configured to receive a first candidate cell identifier from an IAB node or a first candidate cell identifier from a target IAB host CU of the IAB node; the first candidate cell identifier is for sending to the target IAB host Assigned by the IAB node to which the CU is migrated, the first candidate cell identifier includes a candidate cell identifier of a child node of the IAB node and/or a terminal connected to the IAB node;

发送单元，用于将第二候选小区标识发送给所述IAB节点的子节点和/或所述IAB节点连接的终端，所述第二候选小区标识包括所述第一候选小区标识中的至少一个。A sending unit, configured to send a second candidate cell identifier to a child node of the IAB node and/or a terminal connected to the IAB node, where the second candidate cell identifier includes at least one of the first candidate cell identifiers .
一种接入回传一体化IAB宿主集中式单元CU设备，其特征在于，包括：An access and backhaul integrated IAB host centralized unit CU device, characterized in that it includes:

处理单元，用于获得第一候选小区标识；所述第一候选小区标识是为向目标IAB宿主CU迁移的IAB节点分配的，所述第一候选小区标识包括所述IAB节点的子节点和/或所述IAB节点连接的终端的候选小区标识；A processing unit, configured to obtain a first candidate cell identifier; the first candidate cell identifier is allocated for the IAB node migrating to the target IAB host CU, and the first candidate cell identifier includes child nodes of the IAB node and/or or the candidate cell identifier of the terminal connected to the IAB node;

发送单元，用于将所述第一候选小区标识发送给所述IAB节点的源IAB宿主CU。A sending unit, configured to send the first candidate cell identifier to the source IAB host CU of the IAB node.
一种接入回传一体化IAB节点设备，其特征在于，包括：An integrated IAB node device for access and backhaul, characterized in that it includes:

接收单元，用于获取第一候选小区标识；所述第一候选小区标识是为向目标IAB宿主CU迁移的IAB节点分配的，所述第一候选小区标识包括所述IAB节点的子节点和/或所述IAB节点连接的终端的候选小区标识；a receiving unit, configured to obtain a first candidate cell identifier; the first candidate cell identifier is allocated for an IAB node migrating to the target IAB host CU, and the first candidate cell identifier includes a child node of the IAB node and/or or the candidate cell identifier of the terminal connected to the IAB node;

发送单元，用于将所述第一候选小区标识发送给所述IAB节点的源IAB宿主CU。A sending unit, configured to send the first candidate cell identifier to the source IAB host CU of the IAB node.
一种通信装置，其特征在于，包括：处理器、存储器；A communication device, comprising: a processor and a memory;

所述存储器，存储计算机指令；the memory, storing computer instructions;

所述处理器，用于读取所述计算机指令，执行以下操作：The processor, for reading the computer instructions, performs the following operations:

接收来自于所述IAB节点的第一候选小区标识或来自于所述IAB节点的目标IAB宿主CU的第一候选小区标识，所述第一候选小区标识是为向所述目标IAB宿主CU迁移的所述IAB节点分配的，所述第一候选小区标识包括所述IAB节点的子节点和/或所述IAB节点连接的终端的候选小区标识；Receive a first candidate cell identity from the IAB node or a first candidate cell identity from a target IAB host CU of the IAB node, where the first candidate cell identity is for migration to the target IAB host CU Assigned by the IAB node, the first candidate cell identifier includes a candidate cell identifier of a child node of the IAB node and/or a terminal connected to the IAB node;

将第二候选小区标识发送给所述IAB节点的子节点和/或所述IAB节点连接的终端，所述第二候选小区标识包括所述第一候选小区标识中的至少一个。Sending a second candidate cell identifier to a child node of the IAB node and/or a terminal connected to the IAB node, where the second candidate cell identifier includes at least one of the first candidate cell identifiers.
如权利要求25所述的通信装置，其特征在于，在接收来自于所述IAB节点的第一候选小区标识时，所述处理器具体用于：The communication device according to claim 25, wherein when receiving the first candidate cell identifier from the IAB node, the processor is specifically configured to:

接收所述IAB节点发送的通知消息，所述通知消息携带所述第一候选小区标识，其中，所述通知消息为F1应用协议F1AP消息。Receive a notification message sent by the IAB node, where the notification message carries the identifier of the first candidate cell, where the notification message is an F1 application protocol F1AP message.
如权利要求26所述的通信装置，其特征在于，所述通知消息还携带所述第一候选小区标识与第三小区标识之间的映射关系，所述第三小区标识为所述IAB节点在所述源IAB宿主CU下时所述IAB节点的小区标识。The communication device according to claim 26, wherein the notification message further carries a mapping relationship between the first candidate cell identifier and a third cell identifier, the third cell identifier being the IAB node in The cell identifier of the IAB node when the source IAB hosts the CU.
如权利要求26所述的通信装置，其特征在于，所述处理器还用于：The communication device of claim 26, wherein the processor is further configured to:

向所述目标IAB宿主CU发送切换请求消息；sending a handover request message to the target IAB host CU;

接收所述目标IAB宿主CU发送的切换请求确认消息，所述切换请求确认消息封装有无线资源控制RRC重配置消息；receiving a handover request confirmation message sent by the target IAB host CU, where the handover request confirmation message is encapsulated with a radio resource control RRC reconfiguration message;

向所述IAB节点发送所述RRC重配置消息。The RRC reconfiguration message is sent to the IAB node.
如权利要求25所述的通信装置，其特征在于，在接收来自于所述IAB 节点的目标IAB宿主CU的第一候选小区标识时，所述处理器具体用于：The communication apparatus according to claim 25, wherein when receiving the first candidate cell identifier of the target IAB host CU from the IAB node, the processor is specifically configured to:

向所述目标IAB宿主CU发送切换请求消息；sending a handover request message to the target IAB host CU;

接收所述目标IAB宿主CU的切换请求确认消息，所述切换请求确认消息封装有RRC重配置消息以及所述第一候选小区标识；receiving a handover request confirmation message of the target IAB host CU, where the handover request confirmation message is encapsulated with an RRC reconfiguration message and the first candidate cell identifier;

向所述IAB节点发送所述RRC重配置消息。The RRC reconfiguration message is sent to the IAB node.
如权利要求29所述的通信装置，其特征在于，所述接收所述目标IAB宿主CU的切换请求确认消息之后，所述处理器还用于：The communication device according to claim 29, wherein after receiving the handover request confirmation message of the target IAB host CU, the processor is further configured to:

确定所述IAB节点的第三小区标识与所述第一候选小区标识间的映射关系，所述第三小区标识为所述IAB节点在所述源IAB宿主CU下时所述IAB节点的小区标识；Determine the mapping relationship between the third cell identifier of the IAB node and the first candidate cell identifier, where the third cell identifier is the cell identifier of the IAB node when the IAB node is under the source IAB host CU ;

在将第二候选小区标识发送给所述IAB节点的子节点和/或所述IAB节点连接的终端时，所述处理器具体用于：When sending the second candidate cell identifier to the child node of the IAB node and/or the terminal connected to the IAB node, the processor is specifically configured to:

根据所述映射关系，将所述第一候选小区标识中的至少一个发送给所述IAB节点的子节点和/或所述IAB节点连接的终端。According to the mapping relationship, at least one of the first candidate cell identities is sent to a child node of the IAB node and/or a terminal connected to the IAB node.
如权利要求25-27任一项所述的通信装置，其特征在于，所述第一候选小区标识来自于所述IAB节点时，所述第一候选小区标识是所述IAB节点从所述目标IAB宿主CU获得的；或者，The communication device according to any one of claims 25-27, wherein when the first candidate cell identifier is from the IAB node, the first candidate cell identifier is the IAB node from the target obtained by the IAB host CU; or,

所述第一候选小区标识来自于所述IAB节点时，所述第一候选小区标识是所述IAB节点从操作维护和管理OAM网元获得的。When the first candidate cell identifier is from the IAB node, the first candidate cell identifier is obtained by the IAB node from the operation, maintenance and management OAM network element.
如权利要求31所述的通信装置，其特征在于，所述第一候选小区标识是所述IAB节点与所述目标IAB宿主CU建立F1连接时，根据来自于所述目标IAB宿主CU的F1建立响应消息获取的，所述F1建立响应消息携带所述目标IAB宿主CU为所述IAB节点分配的所述第一候选小区标识。The communication device according to claim 31, wherein the first candidate cell identifier is established according to F1 from the target IAB host CU when the IAB node establishes an F1 connection with the target IAB host CU Obtained from the response message, the F1 setup response message carries the first candidate cell identifier allocated by the target IAB host CU to the IAB node.
如权利要求25、29、30任一项所述的通信装置，其特征在于，所述第一候选小区标识来自于所述目标IAB宿主CU时，所述第一候选小区标识是所述目标IAB宿主CU根据来自于所述IAB节点的F1建立请求消息为所述IAB节点分配的；或者，The communication device according to any one of claims 25, 29, and 30, wherein when the first candidate cell identifier is from the target IAB host CU, the first candidate cell identifier is the target IAB Assigned by the host CU for the IAB node according to the F1 establishment request message from the IAB node; or,

所述第一候选小区标识来自于所述目标IAB宿主CU时，所述第一候选小区标识是所述目标IAB宿主CU根据从OAM网元获得的。When the first candidate cell identifier comes from the target IAB donor CU, the first candidate cell identifier is obtained by the target IAB donor CU from the OAM network element.
如权利要求25所述的通信装置，其特征在于，所述处理器还用于：The communication device of claim 25, wherein the processor is further configured to:

接收来自于所述IAB节点的所述第一候选小区标识与第三小区标识之间的映射关系，所述第三小区标识为所述IAB节点在所述源IAB宿主CU下时所述IAB节点的小区标识；或者，所述源IAB宿主CU确定所述映射关系；Receive a mapping relationship between the first candidate cell identifier and a third cell identifier from the IAB node, where the third cell identifier is the IAB node when the IAB node is under the source IAB host CU or, the source IAB host CU determines the mapping relationship;

在将第二候选小区标识发送给所述IAB节点的子节点和/或所述IAB节点连接的终端时，所述处理器具体用于：When sending the second candidate cell identifier to the child node of the IAB node and/or the terminal connected to the IAB node, the processor is specifically configured to:

根据所述映射关系，将所述第一候选小区标识中的至少一个发送给所述IAB节点的子节点和/或所述IAB节点连接的终端。According to the mapping relationship, at least one of the first candidate cell identities is sent to a child node of the IAB node and/or a terminal connected to the IAB node.
如权利要求25所述的通信装置，其特征在于，所述处理器具体用于：The communication device of claim 25, wherein the processor is specifically configured to:

向所述子节点和/或所述IAB节点连接的终端发送RRC重配置消息，所述RRC重配置消息携带所述第二候选小区标识。Send an RRC reconfiguration message to the terminal connected to the sub-node and/or the IAB node, where the RRC reconfiguration message carries the identifier of the second candidate cell.
如权利要求25所述的通信装置，其特征在于，所述处理器还用于：The communication device of claim 25, wherein the processor is further configured to:

将切换相关的配置信息发送给所述子节点和/或所述IAB节点连接的终端。The handover-related configuration information is sent to the sub-node and/or the terminal connected to the IAB node.
一种通信装置，其特征在于，包括：处理器、存储器；A communication device, comprising: a processor and a memory;

所述存储器，存储计算机指令；the memory, storing computer instructions;

所述处理器，用于读取所述计算机指令，执行如下操作：The processor, for reading the computer instructions, performs the following operations:

获得第一候选小区标识，所述第一候选小区标识是为向目标IAB宿主CU迁移的IAB节点分配的，所述第一候选小区标识包括所述IAB节点的子节点和/或所述IAB节点连接的终端的候选小区标识；Obtain a first candidate cell identifier, where the first candidate cell identifier is allocated for the IAB node migrating to the target IAB host CU, and the first candidate cell identifier includes a child node of the IAB node and/or the IAB node the candidate cell identifier of the connected terminal;

将所述第一候选小区标识发送给所述IAB节点的源IAB宿主CU。sending the first candidate cell identifier to the source IAB host CU of the IAB node.
如权利要求37所述的通信装置，其特征在于，所述处理器具体用于：The communication device of claim 37, wherein the processor is specifically configured to:

接收来自于所述IAB节点的F1建立请求消息；receiving an F1 establishment request message from the IAB node;

根据所述F1建立请求消息为所述IAB节点分配所述第一候选小区标识，并向所述IAB节点发送F1建立响应消息，所述F1建立响应消息携带所述第一候选小区标识。The first candidate cell identifier is allocated to the IAB node according to the F1 setup request message, and an F1 setup response message is sent to the IAB node, where the F1 setup response message carries the first candidate cell identifier.
如权利要求37所述的通信装置，其特征在于，所述处理器具体用于：The communication device of claim 37, wherein the processor is specifically configured to:

从维护操作和管理OAM网元获得所述第一候选小区标识。The first candidate cell identity is obtained from the maintenance operation and management OAM network element.
如权利要求37所述的通信装置，其特征在于，所述处理器具体用于：The communication device of claim 37, wherein the processor is specifically configured to:

接收来自于所述源IAB宿主CU的切换请求消息；receiving a handover request message from the source IAB host CU;

向所述源IAB宿主CU发送切换请求确认消息，所述切换请求确认消息携带所述第一候选小区标识。Send a handover request confirmation message to the source IAB host CU, where the handover request confirmation message carries the first candidate cell identifier.
一种通信装置，其特征在于，包括：处理器、存储器；A communication device, comprising: a processor and a memory;

所述存储器，存储计算机指令；the memory, storing computer instructions;

所述处理器，用于读取所述计算机指令，执行如下操作：The processor, for reading the computer instructions, performs the following operations:

获取第一候选小区标识，所述第一候选小区标识是为向目标IAB宿主CU迁移的IAB节点分配的，所述第一候选小区标识包括所述IAB节点的子节点和/或所述IAB节点连接的终端的候选小区标识；Obtain a first candidate cell identifier, where the first candidate cell identifier is allocated for the IAB node migrating to the target IAB host CU, and the first candidate cell identifier includes a child node of the IAB node and/or the IAB node the candidate cell identifier of the connected terminal;

将所述第一候选小区标识发送给所述IAB节点的源IAB宿主CU。sending the first candidate cell identifier to the source IAB host CU of the IAB node.
如权利要求41所述的通信装置，其特征在于，所述处理器具体用于：The communication device of claim 41, wherein the processor is specifically configured to:

向所述IAB节点的目标IAB宿主CU发送F1建立请求消息；sending an F1 establishment request message to the target IAB host CU of the IAB node;

接收所述目标IAB宿主CU发送的F1建立响应消息，所述F1建立响应消息携带所述目标IAB宿主CU为所述IAB节点分配的所述第一候选小区标识。An F1 establishment response message sent by the target IAB host CU is received, where the F1 establishment response message carries the first candidate cell identifier allocated by the target IAB host CU for the IAB node.
如权利要求41所述的通信装置，其特征在于，所述处理器具体用于：The communication device of claim 41, wherein the processor is specifically configured to:

从操作维护和管理OAM网元获取所述第一候选小区标识。The first candidate cell identifier is obtained from the operation, maintenance and management OAM network element.
如权利要求41-43任一项所述的通信装置，其特征在于，所述处理器具体用于：The communication device according to any one of claims 41-43, wherein the processor is specifically configured to:

向所述源IAB宿主发送的通知消息，所述通知消息携带所述第一候选小区标识，其中，所述通知消息为F1应用协议F1AP消息。A notification message sent to the source IAB host, where the notification message carries the identifier of the first candidate cell, where the notification message is an F1 application protocol F1AP message.
如权利要求44所述的通信装置，其特征在于，所述通知消息还携带所述第一候选小区标识与第三小区标识之间的映射关系，所述第三小区标识为所述IAB节点在所述源IAB宿主CU下时所述IAB节点的小区标识。The communication device according to claim 44, wherein the notification message further carries a mapping relationship between the first candidate cell identifier and a third cell identifier, and the third cell identifier is the IAB node in The cell identifier of the IAB node when the source IAB hosts the CU.
一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机可执行指令，所述计算机可执行指令用于使计算机执行如权利1-12任一项所述的方法，或所述计算机可执行指令用于使计算机执行如权利13-16任一项所述的方法，或所述计算机可执行指令用于使计算机执行如权利17-21任一项所述的方法。A computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to cause a computer to execute the method according to any one of claims 1-12, Or the computer-executable instructions are used to cause a computer to perform the method of any one of claims 13-16, or the computer-executable instructions are used to cause a computer to perform the method of any one of claims 17-21.